Bodenlebende wirbellose Meerestiere (marines Makrozoobenthos)

German Red List

Rachor, E.; Bönsch, R.; Boos, K.; Gosselck, F.; Grotjahn, M.; Günther, C.-P.; Gusky, M.; Gutow, L.; Heiber, W.; Jantschik, P.; Krieg, H.-J.; Krone, R.; Nehmer, P.; Reichert, K.; Reiss, H.; Schröder, A.; Witt, J. & Zettler, M.L. (2013): Rote Liste und Artenliste der bodenlebenden wirbellosen Meerestiere. – In: Becker, N., Haupt, H., Hofbauer, N., Ludwig, G. & Nehring, S. (Bearb.): Rote Liste gefährdeter Tiere, Pflanzen und Pilze Deutschlands. Band 2: Meeresorganismen. – Bonn (Bundesamt für Naturschutz). – Naturschutz und Biologische Vielfalt 70 (2): 81–176.

Comment: The German national Red List threat categories do not correspond with the international IUCN categories.

Checklist

Scientific name German name Red List Category
A
Abietinaria abietina (L., 1758) Data deficient
Abludomelita obtusata (Montagu, 1813) Least concern
Abra alba (W. Wood, 1802) Weisse Tellmuschel; Kleine Pfeffermuschel Least concern
Abra nitida (O.F. Müller, 1776) Glänzende Tellmuschel Threatened to an unkown extent
Abra prismatica (Montagu, 1808) Lange Pfeffermuschel Data deficient
Abra tenuis (Montagu, 1803) Data deficient
Acanthocardia echinata (L., 1758) Dornige Herzmuschel Threatened to an unkown extent
Acanthodoris pilosa (Abildgaard in Müller, 1789) Weichwarzige Sternschnecke Least concern
Acaulis primarius Stimpson, 1854 Data deficient
Achelia echinata Hodge, 1864 Least concern
Achelia hispida Hodge, 1864 Rare
Acidostoma obesum (Bate & Westwood, 1861) Least concern
Aclis minor (Brown, 1827) Kleine Spitzschnecke Least concern
Acrocnida brachiata (Montagu, 1804) Langarmiger Schlangenstern Least concern
Acteon tornatilis (L., 1758) Gemeine Drechselschnecke Near threatened
Actinia equina (L, 1758) Pferdeaktinie, Purpurrose Data deficient
Actinothoe anguicoma (Price in Johnston, 1847) Data deficient
Actinothoe sphyrodeta (Gosse, 1858) Data deficient
Adalaria proxima (Alder & Hancock, 1854) Rote Sternschnecke Least concern
Adamsia palliata (O.F.Müller, 1776) Mantelaktinie Data deficient
Aeginina longicornis (Kroyer, 1843) Data deficient
Aeolidia papillosa (L., 1761) Breitwarzige Fadenschnecke Near threatened
Aeolidiella glauca (Alder & Hancock, 1845) Braungepunktete Fadenschnecke Least concern
Aeolosoma hemprichi Ehrenberg, 1831 Data deficient
Aequipecten opercularis (L., 1758) Gedeckte Kammmuschel Rare
Aetea truncata (Landsborough, 1852) Rare
Aglaophamus agilis (Langerhans,1880) Least concern
Aglaophamus pulcher (Rainer, 1990) Rare
Akera bullata O.F. Müller, 1776 Gemeine Kugelschnecke Least concern
Aktedrilus monospermathecus Knöllner, 1935 Data deficient
Alcyonidioides mytili (Dalyell, 1848) Data deficient
Alcyonidium diaphanum (Hudson, 1778) Least concern
Alcyonidium gelatinosum (L., 1761) Gallert-Moostierchen Vulnerable
Alcyonidium hirsutum (Fleming, 1828) Data deficient
Alcyonidium mamillatum Alder, 1857 Rare
Alcyonidium parasiticum (Fleming, 1828) Threatened to an unkown extent
Alcyonidium polyoum (Hassall, 1841) Data deficient
Alcyonium digitatum L., 1758 Tote Manneshand Vulnerable
Alcyonium glomeratum (Hassall, 1843) Endangered
Alderia modesta (Lovén, 1844) Salzwiesen-Nacktschnecke Endangered
Alentia gelatinosa (M. Sars, 1835) Extinct in Germany
Alitta succinea (Frey & Leuckart, 1847)  Data deficient
Alitta virens (M. Sars, 1835) Grüner Seeringelwurm Data deficient
Alkmaria romijni Horst, 1919 Vulnerable
Allomelita pellucida (Sars, 1882) Rare
Alvania lactea (Michaud, 1832) Milchweiße Kleinschnecke Data deficient
Amauropsis islandica (Gmelin, 1791) Isländische Bohrschnecke Endangered
Ampelisca brevicornis (Costa, 1853) Least concern
Ampelisca diadema (Costa, 1853) Data deficient
Ampelisca gibba G.O. Sars, 1883 Rare
Ampelisca macrocephala Liljeborg, 1852 Least concern
Ampelisca spinipes Boeck, 1861 Least concern
Ampelisca tenuicornis Liljeborg, 1855 Least concern
Ampelisca typica (Bate, 1856) Vulnerable
Ampharete acutifrons (Grube, 1860) Least concern
Ampharete baltica Eliason, 1955 Least concern
Ampharete falcata Eliason, 1955 Least concern
Ampharete finmarchica (M. Sars, 1864) Least concern
Amphiblestrum auritum (Hincks, 1877) Data deficient
Amphiblestrum flemingii (Busk, 1854) Data deficient
Amphiblestrum solidum (Packard, 1863) Data deficient
Amphichaeta leydigi Tauber, 1879 Data deficient
Amphichaeta sannio Kallstenius, 1892 Threatened to an unkown extent
Amphicteis gunneri (M. Sars, 1835) Least concern
Amphicteis midas (Gosse, 1855) Least concern
Amphictene auricoma (O.F. Müller, 1776) Gebogener Köcherwurm Least concern
Amphilectus fucorum (Esper, 1794) Rare
Amphilectus lobatus (Montagu, 1818) Data deficient
Amphilochoides boecki Sars, 1892 Data deficient
Amphilochus manudens Bate, 1862 Rare
Amphilochus neapolitanus Della Valle, 1893 Near threatened
Amphipholis squamata (Delle Chiaje, 1828) Schuppiger Schlangenstern Near threatened
Amphitrite cirrata (O. F. Müller 1771 in O. F. Müller 1776) Threatened to an unkown extent
Amphitritides gracilis (Grube, 1860) Extinct in Germany
Amphiura chiajei Forbes, 1843 Grober Schlangenstern Rare
Amphiura filiformis (O.F. Müller, 1776) Fadenarm-Schlangenstern, Zierlicher Schlangenstern Least concern
Ampithoe ramondi Audouin, 1826 Data deficient
Ampithoe rubricata (Montagu, 1818) Least concern
Ancula gibbosa (Risso, 1818) Weiße Griffelschnecke Least concern
Anguinella palmata van Beneden, 1845 Data deficient
Anobothrus gracilis (Malmgren, 1865) Least concern
Anomia ephippium L., 1758 Sattelmuschel Rare
Anonyx lilljeborgii Boeck, 1870 Least concern
Anonyx sarsi Steele & Brunel, 1968 Rare
Anoplodactylus angulatus (Dohrn, 1881) Rare
Anoplodactylus petiolatus (Krøyer, 1844) Least concern
Anoplodactylus pygmaeus (Hodge, 1864) Least concern
Antalis dentalis (L., 1758) Elefantenzahn Data deficient
Aonides oxycephala (M. Sars, 1862) Data deficient
Aonides paucibranchiata Southern, 1914 Least concern
Aora gracilis (Bate, 1857) Least concern
Aora typica Krøyer, 1845 Data deficient
Aphelochaeta filiformis (Keferstein, 1862) Data deficient
Aphelochaeta marioni (Saint Joseph, 1894) Least concern
Apherusa bispinosa (Bate, 1857) Threatened to an unkown extent
Apherusa clevei G.O. Sars, 1904 Rare
Apherusa henneguyi Chevreux & Fage, 1925 Data deficient
Apherusa jurinei (Milne-Edwards, 1830) Rare
Apherusa ovalipes Norman & Scott, 1906 Least concern
Aphrodita aculeata L., 1761 Seemaus, Filzwurm Data deficient
Apistobranchus tullbergi (Théel, 1879) Least concern
Aplidium nordmanni (Milne-Edwards, 1841) Not evaluated
Aplidium turbinatum (Savigny, 1816) Rare
Aplysia punctata (Cuvier, 1803) Seehase Rare
Apocorophium lacustre (Vanhöffen, 1911) Least concern
Apohyale prevosti (Milne-Edwards, 1830) Rare
Aporrhais pespelecani (L., 1758) Pelikansfuß Threatened to an unkown extent
Arcopagia crassa (Pennant, 1777) Dickschalige Tellmuschel Least concern
Arctica islandica (L., 1767) Islandmuschel Vulnerable
Arenicola marina (L., 1758) Sandpier, Köderwurm Least concern
Argissa hamatipes (Norman, 1869) Least concern
Aricidea catherinae Laubier, 1967 Data deficient
Aricidea cerrutii Laubier, 1966 Data deficient
Aricidea minuta Southward, 1956 Least concern
Aricidea roberti Hartley, 1984 Least concern
Aricidea simonae Laubier & Ramos, 1974 Least concern
Aricidea suecica Eliason, 1920 Least concern
Artacama proboscidea Malmgren, 1866 Least concern
Ascidia conchilega O.F. Müller, 1776 Data deficient
Ascidia virginea O.F. Müller, 1776 Extinct in Germany
Ascidiella aspersa (O.F. Müller, 1776) Least concern
Ascidiella scabra (O.F. Müller, 1776) Rare
Asperarca nodulosa (O.F. Müller, 1776) Knotige Archenmuschel Rare
Aspidelectra melolontha (Landsborough, 1852) Data deficient
Assiminea grayana Flemming, 1828 Kegelige Marschschnecke Threatened to an unkown extent
Astacilla longicornis (Sowerby, 1806) Rare
Astarte borealis (Schumacher, 1817) Nördliche Astarte Threatened to an unkown extent
Astarte elliptica (Brown, 1827) Elliptische Astarte Threatened to an unkown extent
Astarte falsteri Høpner Petersen, 2001 Falster-Astarte Data deficient
Astarte montagui (Dillwyn, 1817) Kugel-Astarte Vulnerable
Asterias rubens L., 1758 Gemeiner Seestern Least concern
Astropecten aranciacus (L., 1758) Roter Kammstern Extinct in Germany
Astropecten irregularis (Pennant, 1777) Nordischer Kammstern Threatened to an unkown extent
Athanas nitescens (Leach, 1813) Data deficient
Atherospio guillei (Laubier & Ramos, 1974) Rare
Atyaephyra desmarestii (Millet, 1831) "Süßwassergarnele" Not evaluated
Atylus guttatus (Costa, 1851) Data deficient
Atylus swammerdami (Milne-Edwards, 1830) Least concern
Atylus vedlomensis (Bate & Westwood, 1862) Data deficient
Autonoe longipes (Liljeborg, 1852) Least concern
Axionice maculata (Dalyell, 1853) Data deficient
Azorinus chamasolen (da Costa, 1778) Least concern
B
Balanus balanus (L., 1758) Data deficient
Balanus crenatus Bruguiére, 1789 Gekerbte Seepocke Least concern
Balanus improvisus Darwin, 1854 Not evaluated
Barnea candida (L., 1758) Weiße Bohrmuschel Least concern
Barnea parva (Pennant, 1777) Least concern
Bathyporeia elegans Watkin, 1938 Least concern
Bathyporeia gracilis Sars, 1891 Data deficient
Bathyporeia guilliamsoniana (Bate, 1857) Least concern
Bathyporeia nana Toulmond, 1966 Data deficient
Bathyporeia pelagica (Bate, 1856) Least concern
Bathyporeia pilosa Lindström, 1855 Least concern
Bathyporeia sarsi Watkin, 1938 Least concern
Bathyporeia tenuipes Meinert, 1877 Least concern
Bela nebula (Montagu, 1803) Perlmutt-Nadelschnecke Least concern
Bicellariella ciliata (L., 1758) Rare
Biemna variantia (Bowerbank, 1858) Rare
Bimeria vestita Wright, 1859 Data deficient
Bispira crassicornis (Sars, 1851) Least concern
Bittium reticulatum (da Costa, 1778) Kleine Gitterschnecke Threatened to an unkown extent
Boccardiella ligerica (Ferronière, 1898) Least concern
Bodotria arenosa Goodsir, 1843 Vulnerable
Bodotria pulchella (Sars, 1878) Least concern
Bodotria scorpioides (Montagu, 1804) Least concern
Boreotrophon truncatus (Ström, 1768) Abgestutzte Purpurschnecke Endangered
Botrylloides leachii (Savigny, 1816) Rare
Botryllus schlosseri (Pallas, 1766) Least concern
Bougainvillia britannica (Forbes, 1841) Data deficient
Bougainvillia muscoides (Sars, 1846) Rare
Bougainvillia muscus (Allman, 1863) Data deficient
Bougainvillia principis (Steenstrup, 1850) Data deficient
Bougainvillia pyramidata (Forbes & Goodsir, 1853) Data deficient
Bowerbankia gracilis Leidy, 1855 Least concern
Bowerbankia imbricata (Adams, 1798) Least concern
Bowerbankia pustulosa (Ellis & Solander, 1786) Rare
Brada villosa (Rathke, 1843) Least concern
Branchiomma bombyx (Dalyell, 1853) Rare
Branchiostoma lanceolatum (Pallas, 1774) Lanzettfischchen, Amphioxus Threatened to an unkown extent
Brania pusilla (Dujardin, 1851) Rare
Brissopsis lyrifera (Forbes, 1841) Leier-Herzigel Threatened to an unkown extent
Buccinum undatum L., 1758 Wellhornschnecke Endangered
Bugula angustiloba (Lamarck, 1816) Rare
Bugula plumosa (Pallas, 1766) Least concern
Bugula stolonifera Ryland, 1960 Rare
Bugula turbinata Alder, 1857 Rare
Bulbella abscondita Braem, 1951 Data deficient
Byblis gaimardii (Krøyer, 1846) Data deficient
Bylgides sarsi (Kinberg in Malmgren, 1866) Least concern
C
Caberea ellisii (Fleming, 1814) Extinct in Germany
Cadlina laevis (L., 1767) Glatte Prachtsternschnecke Least concern
Callianassa subterranea (Montagu, 1808) Maulwurfskrebs Least concern
Calliopaea bellula d'Orbigny, 1837 Schwarzmelierte Schlundsackschnecke Least concern
Calliopius laeviusculus (Krøyer, 1838) Least concern
Calliostoma zizyphinum (L., 1758) Bunte Kreiselschnecke Threatened to an unkown extent
Callipallene brevirostris (Johnston, 1837) Rare
Callochiton septemvalvis (Montagu, 1803) Rostrote Käferschnecke Extinct in Germany
Callopora dumerilii (Audouin, 1826) Rare
Callopora lineata (L., 1767) Least concern
Callopora rylandi Bobin & Prenant, 1965 Data deficient
Calycella gracilis Hartlaub, 1897 Data deficient
Calycella syringa (L., 1767) Least concern
Campanularia flexiosa (Hincks, 1861) Data deficient
Campanularia hincksii Alder, 1856 Data deficient
Campanularia volubilis (L., 1758) Rare
Campylaspis costata (G.O. Sars, 1865) Data deficient
Cancer bellianus Johnson, 1861  Rare
Cancer pagurus L., 1758 Taschenkrebs Least concern
Capitella capitata (Fabricius, 1780) Least concern
Capitellides giardi Mesnil, 1897 Least concern
Capitomastus minimus (Langerhans, 1881) Least concern
Caprella equilibra Say, 1818 Data deficient
Caprella linearis (L., 1767) Gespenstkrebschen Near threatened
Caprella mutica Schurin, 1935 Not evaluated
Caprella penantis Leach, 1814 Rare
Caprella septentrionalis Krøyer, 1838 Least concern
Caprella tuberculata Guérin, 1836 Rare
Capulus ungaricus (L., 1758) Ungarnkappe Data deficient
Carcinus maenas (L., 1758) Strandkrabbe Least concern
Caridion gordoni (Bate, 1858) Rare
Caulleriella bioculata (Keferstein, 1862) Rare
Caulleriella killariensis (Southern, 1914) Data deficient
Cellepora pumicosa (Pallas, 1766) Rare
Celleporella hyalina (L., 1767) Rare
Cerastoderma edule (L., 1758) Essbare Herzmuschel Least concern
Cerastoderma glaucum (Bruguière, 1789) Lagunen-Herzmuschel Least concern
Ceratocephale loveni Malmgren, 1867 Data deficient
Cerianthus lloydii Gosse, 1859 Near threatened
Cernosvitoviella immota (Knöllner, 1935) Data deficient
Chaetoderma nitidulum Lovén, 1844 Data deficient
Chaetogaster diaphanus (Gruithuisen, 1828) Data deficient
Chaetogaster limnaei von Baer, 1827 Data deficient
Chaetopterus variopedatus Cuvier, 1827 Data deficient
Chaetozone caputesocis (Saint Joseph, 1894) Rare
Chaetozone christiei Malmgren, 1867 Least concern
Chaetozone setosa Malmgren, 1867 Least concern
Chalinula limbata (Montagu, 1818) Data deficient
Chalinula loosanoffi (Hartman, 1958) Rare
Chamelea gallina (L., 1758) Venusmuschel Threatened to an unkown extent
Cheirocratus assimilis (Lilljeborg, 1852) Least concern
Cheirocratus intermedius G.O. Sars, 1894 Least concern
Cheirocratus sundevallii (Rathke, 1843) Least concern
Chelicorophium curvispinum (G.O. Sars, 1895) Not evaluated
Chelura terebrans Philippi, 1839 Data deficient
Chone duneri Malmgren, 1867 Threatened to an unkown extent
Chone infundibuliformis Krøyer, 1856 Threatened to an unkown extent
Chorizopora brongniartii (Audouin, 1826) Rare
Chrysallida interstincta (J. Adams, 1797) Stumpfe Pyramidenschnecke Least concern
Chrysallida multicostata (Jeffreys, 1884) Extinct in Germany
Chrysallida pellucida (Dillwyn, 1817) Durchscheinende Pyramidenschnecke Least concern
Chthamalus stellatus (Poli, 1795) Stern-Seepocke Data deficient
Ciona intestinalis (L., 1767) Schlauch-Seescheide Least concern
Circeis spirillum (L., 1758) Rare
Cirolana cranchi Leach, 1818 Data deficient
Cirratulus cirratus (O.F. Müller, 1776) Rare
Clausinella fasciata (da Costa, 1778) Gebänderte Venusmuschel Rare
Clava multicornis (Forsskål, 1775) Data deficient
Clavelina lepadiformis (O.F. Müller, 1776) Data deficient
Cliona lobata Hancock, 1849 Rare
Clione celata Grant, 1826 Bohrschwamm Endangered
Clitellio arenarius (O.F. Müller, 1776) Threatened to an unkown extent
Clymenura leiopygos (Grube, 1860) Data deficient
Clytia hemisphaerica (L., 1767) Data deficient
Cochlodesma praetenue (Pulteney, 1799) Fragile Löffelmuschel Least concern
Cognettia glandulosa (Michaelsen, 1888) Data deficient
Cognettia sphagnetorum (Veydovsky, 1877) Data deficient
Colus gracilis (da Costa, 1778) Schlanke Spindelschnecke Data deficient
Colus jeffreysianus (P. Fischer, 1868) Geschwollene Spindelschnecke Data deficient
Conopeum reticulum (L., 1767) Least concern
Conopeum seurati (Canu, 1928) Data deficient
Corbula gibba (Olivi, 1792) Korbmuschel Least concern
Cordylophora caspia (Pallas, 1771) Not evaluated
Corophium arenarium Crawford, 1937 Vulnerable
Corophium multisetosum Stock, 1952 Threatened to an unkown extent
Corophium volutator (Pallas, 1766) Schlickkrebs, Wattkrebs Least concern
Corymorpha nutans M. Sars, 1835 Least concern
Corymorpha sarsii Steenstrup, 1855 Data deficient
Coryne eximia Allmann, 1859 Data deficient
Coryne muscoides (L., 1761) Rare
Coryne pusilla Gaertner, 1774 Rare
Coryne vanbenedeni Hincks, 1868 Data deficient
Coryphella gracilis (Alder & Hancock, 1844) Grazile Fadenschnecke Least concern
Corystes cassivelaunus (Pennant, 1777) Maskenkrabbe Least concern
Cossura longocirrata Webser & Benedict, 1887 Data deficient
Crangon allmanni Kinahan, 1857 Least concern
Crangon crangon (L., 1758) Granat, Nordseekrabbe Least concern
Crassicorophium bonellii (Milne-Edwards, 1830) Least concern
Crassicorophium crassicorne (Bruzelius, 1859) Least concern
Crassostrea gigas (Thunberg, 1793) Pazifische Auster Not evaluated
Craterolophus convolvulus (Johnston, 1835) Rare
Crenella decussata (Montagu, 1808) Gegitterte Crenella Least concern
Crepidula fornicata (L., 1758) Pantoffelschnecke Not evaluated
Cressa dubia (Bate, 1857) Rare
Cribrilina punctata (Hassall, 1841) Least concern
Criodrilus lacuum Hoffmeister, 1854 Data deficient
Crisia aculeata Hassall, 1841 Rare
Crisia denticulata (Lamarck, 1816) Rare
Crisia eburnea (L., 1758) Elfenbeinmoos Least concern
Crisidia cornuta (L., 1758) Rare
Crisiella producta (Smitt, 1865) Data deficient
Cristatella mucedo Cuvier, 1798 Data deficient
Crossaster papposus (L., 1767) Seesonne, Sonnenstern Endangered
Cryptosula pallasiana (Moll, 1803) Rare
Ctenodrilus serratus (Schmidt, 1857) Data deficient
Cucumaria frondosa (Gunnerus, 1767) Data deficient
Cumella pygmaea G.O. Sars, 1865 Threatened to an unkown extent
Cumopsis goodsir (van Beneden, 1851) Vulnerable
Cumopsis longipes Dohrn, 1869 Rare
Cuspidella grandis Hincks, 1868 Data deficient
Cuthona amoena (Alder & Hancock, 1845) Blau-Weiß-Rote Cuthona Rare
Cuthona caerulea (Montagu, 1804) Orange-Grün-Blaue Cuthona Data deficient
Cuthona concinna (Alder & Hancock, 1843) Silber-blaue Cuthona Data deficient
Cuthona foliata (Forbes & Goodsir, 1839) Gestreifte Cuthona Rare
Cuthona gymnota (Couthouy, 1838) Nackte Cuthona Data deficient
Cuthona nana (Alder & Hancock, 1842) Zwerg-Cuthona Data deficient
Cuthona pustulata (Alder & Hancock, 1854) Data deficient
Cuthona rubescens Picton & Brown, 1978 Data deficient
Cyathura carinata (Krøyer, 1847) Data deficient
Cylichna alba (Brown, 1827) Weiße Becherschnecke Data deficient
Cylichna cylindracea (Pennant, 1777) Gemeine Becherschnecke Least concern
Cylichnina umbilicata (Montagu, 1803) Data deficient
D
Deflexilodes subnudus (Norman, 1889) Data deficient
Dendrodoa grossularia (van Beneden, 1846) Tangbeere Near threatened
Dendronotus frondosus (Ascanius, 1774) Zottige Bäumchenschnecke Near threatened
Dero digitata (Müller, 1773) Data deficient
Deshayesorchestia deshayesii (Audouin, 1826) Threatened to an unkown extent
Devonia perrieri (Malard, 1904) Rare
Dexamine spinosa (Montagu, 1813) Least concern
Dexamine thea Boeck, 1861 Rare
Diadumene cincta Stephenson, 1925 Not evaluated
Diadumene lineata (Verrill, 1869) Threatened to an unkown extent
Diaphana minuta T. Brown, 1827 Enggenabelte Zwergfässchenschnecke Least concern
Diastylis boecki Zimmer, 1930 Rare
Diastylis bradyi Norman, 1879 Least concern
Diastylis cornuta (Boeck, 1864) Data deficient
Diastylis laevis Norman, 1869 Least concern
Diastylis lucifera (Krøyer, 1841) Data deficient
Diastylis rathkei (Krøyer, 1841) Least concern
Diastylis rugosa Sars, 1865 Data deficient
Diastylis spinulosa Heller, 1875  Extinct in Germany
Diastylis tumida (Liljeborg, 1855) Rare
Diastyloides biplicatus (G.O. Sars, 1865) Data deficient
Dicoryne conferta (Alder, 1856) Data deficient
Didemnum maculosum (Milne-Edwards, 1841) Rare
Diogenes pugilator (Roux, 1829) Data deficient
Diphasia attenuata (Hincks, 1866) Rare
Diphasia rosacea (L., 1758) Rare
Diplocirrus glaucus (Malmgren, 1867) Least concern
Diplosoma listerianum (Milne-Edwards, 1841) Data deficient
Diplosoma migrans (Menker & Ax, 1970) Rare
Dipolydora caulleryi (Mesnil, 1897) Data deficient
Dipolydora coeca (Ørsted, 1843) Least concern
Dipolydora flava Claparède, 1870 Data deficient
Dipolydora giardi (Mesnil, 1896) Data deficient
Dipolydora quadrilobata (Jacobi, 1883) Least concern
Disporella hispida (Fleming, 1828) Rare
Dodecaceria concharum Ørsted, 1843 Data deficient
Donax trunculus L., 1758 Extinct in Germany
Donax vittatus (da Costa, 1778) Sägezähnchen Threatened to an unkown extent
Doris pseudoargus Rapp, 1827 Meerzitrone Rare
Dosinia exoleta (L., 1758) Artemismuschel Threatened to an unkown extent
Dosinia lupinus (L., 1758) Glatte Artemis Data deficient
Doto coronata (Gmelin, 1791) Doto Vulnerable
Doto fragilis (Forbes, 1838) Fragile oder zarte Doto Rare
Doto tuberculata Lemche, 1976 Extinct in Germany
Drilonereis filum (Claparède, 1868) Rare
Dulichia falcata (Bate, 1857) Least concern
Dynamena pumila (L., 1758) Data deficient
Dyopedos monacantha (Metzger, 1875) Least concern
Dyopedos porrectus (Bate, 1857) Data deficient
Dysidea fragilis (Montagu, 1818) Rare
Dysidea pallescens (Schmidt, 1862) Rare
E
Ebala nitidissima (Montagu, 1803) Glänzende Zwergturmschnecke Data deficient
Ebalia cranchii Leach, 1817 Least concern
Ebalia granulosa Milne-Edwards, 1837 Data deficient
Ebalia tuberosa (Pennant, 1777) Data deficient
Ebalia tumefacta (Montagu, 1808) Vulnerable
Echinocardium cordatum (Pennant, 1777) Kleiner Herzseeigel Least concern
Echinocardium flavescens (O.F. Müller, 1776) Nordischer Herzigel Threatened to an unkown extent
Echinocardium pennatifidum Norman, 1868 Großer Herzseeigel Threatened to an unkown extent
Echinocyamus pusillus (O.F. Müller, 1776) Kleiner Schildigel, Zwergseeigel Threatened to an unkown extent
Echinogammarus marinus (Leach, 1815) Data deficient
Echinogammarus pirloti (Sexton & Spooner, 1940) Data deficient
Echinogammarus stoerensis (Reid, 1938) Data deficient
Echinus esculentus L., 1758 Essbarer Seeigel Threatened to an unkown extent
Echiurus echiurus (Pallas, 1767) Quappwurm, Igelwurm Endangered
Ecrobia ventrosa (Montagu, 1803) Bauchige Wattschnecke Threatened to an unkown extent
Ectopleura dumortierii (Van Beneden, 1844) Data deficient
Ectopleura larynx (Ellis & Solander, 1786) Röhrenpolyp Data deficient
Edwardsia danica Carlgren, 1921 Data deficient
Einhornia crustulenta (Pallas, 1766) Least concern
Ekmania barthii (Troschel, 1846) Data deficient
Elasmopus rapax Costa, 1853 Rare
Electra monostachys (Busk, 1854) Rare
Electra pilosa (L., 1767) Zottige Seerinde Least concern
Elminius modestus Darwin, 1854 Not evaluated
Elysia viridis (Montagu, 1804) Grüne Samtschnecke Rare
Enchytraeus albidus Henle, 1837 Data deficient
Enipo elisabethae McIntosh, 1900 Data deficient
Enipo kinbergi Malmgren, 1866 Rare
Ennucula tenuis (Montagu, 1808) Dünnschalige Nussmuschel Least concern
Ensis directus (Conrad, 1843) Amerikanische Scheidenmuschel Not evaluated
Ensis ensis (L., 1758) Schwertförmige Messerscheide Endangered
Ensis magnus Schumacher,1817 Gerade Scheidenmuschel Vulnerable
Ensis siliqua (L., 1758) Schotenmuschel Threatened to an unkown extent
Ephydatia fluviatilis (L., 1759) Not evaluated
Ephydatia muelleri (Lieberkühn, 1856) Not evaluated
Epigamia alexandri (Malmgren, 1867) Data deficient
Epitonium clathratulum (Kanmacher, 1798) Weiße Wendeltreppe Least concern
Epitonium clathrus (L., 1758) Unechte Wendeltreppe Data deficient
Epitonium dallianum (Verrill & Smith, 1880) Extinct in Germany
Ercolania coerulea Trinchese, 1892  Extinct in Germany
Ericthonius difformis Milne-Edwards, 1830 Data deficient
Ericthonius punctatus (Bate, 1857) Least concern
Erinaceusyllis erinaceus (Claparède, 1863) Data deficient
Eriocheir sinensis H. Milne-Edwards, 1853 Wollhandkrabbe Not evaluated
Eriopisa elongata (Bruzelius, 1859) Least concern
Escharella immersa (Fleming, 1828) Least concern
Escharella variolosa (Johnston, 1838) Rare
Escharoides coccinea (Abildgaard, 1806) Extinct in Germany
Eteone barbata Malmgren, 1865 Least concern
Eteone flava (Fabricius, 1780) Least concern
Eteone foliosa Quatrefages, 1866 Least concern
Eteone lactea Claparède, 1868 Data deficient
Eteone longa (Fabricius, 1780) Least concern
Eteone pusilla Ørsted, 1843 Data deficient
Eteone spetsbergensis Malmgren, 1865 Data deficient
Eualus cranchii (Leach, 1817) Rare
Eualus gaimardii (H. Milne-Edwards, 1837) Data deficient
Eualus occultus (Lebour, 1936) Rare
Eualus pusiolus (Krøyer, 1841) Data deficient
Eubranchus exiguus (Alder & Hancock, 1848) Ballon-Fadenschnecke Data deficient
Eubranchus farrani (Alder & Hancock, 1844) Orangegepunktete Ballon-Fadenschnecke Data deficient
Eubranchus pallidus (Alder & Hancock, 1842) Blasige Ballon-Fadenschnecke Data deficient
Eubranchus tricolor Forbes, 1838 Dreifarbige Ballon-Fadenschnecke Data deficient
Eucheilota maculata Hartlaub, 1894 Data deficient
Euchone papillosa (M. Sars, 1851) Endangered
Eucratea loricata (L., 1758) Near threatened
Eudendrium album Nutting, 1898 Data deficient
Eudendrium capillare Alder, 1856 Data deficient
Eudendrium rameum (Pallas, 1766) Data deficient
Eudendrium ramosum (L., 1758) Data deficient
Eudorella emarginata (Krøyer, 1846) Least concern
Eudorella truncatula (Bate, 1856) Least concern
Eudorellopsis deformis (Krøyer, 1846) Least concern
Eugyra arenosa (Alder & Hancock, 1848) Extinct in Germany
Eugyra glutinans (Moeller, 1842) Extinct in Germany
Eugyra pedunculata Traustedt, 1886  Extinct in Germany
Eulalia bilineata (Johnston, 1840) Threatened to an unkown extent
Eulalia expusilla Pleijel, 1987 Rare
Eulalia viridis (L., 1767) Data deficient
Eulimella acicula (Philippi, 1836) Nadel-Pyramidenschnecke Extinct in Germany
Eumida arctica (Annenkova, 1946) Data deficient
Eumida bahusiensis Bergström, 1914 Least concern
Eumida minuta (Ditlevsen, 1917) Data deficient
Eumida punctifera (Grube, 1860) Least concern
Eumida sanguinea (Ørsted, 1843) Least concern
Eunereis elittoralis (Eliason, 1962) Data deficient
Eunereis longissima (Johnston, 1840) Least concern
Eunoe nodosa (M. Sars, 1861) Data deficient
Eupolymnia nebulosa (Montagu, 1818) Threatened to an unkown extent
Eupolymnia nesidensis (Delle Chiaje, 1828) Extinct in Germany
Eurydice affinis Hansen, 1905 Data deficient
Eurydice pulchra Leach, 1815 Schöne Euridice Least concern
Euspira catena (da Costa, 1778) Halsband-Nabelschnecke Least concern
Euspira montagui (Forbes, 1838) Ungefleckte Nabelschnecke Least concern
Euspira pallida (Broderip & Sowerby, 1829) Helle Nördliche Mondschnecke Data deficient
Euspira pulchella (Risso, 1826) Glänzende Nabelschnecke Least concern
Eusyllis blomstrandi Malmgren, 1867 Data deficient
Exogone hebes (Webster & Benedict, 1884) Data deficient
Exogone naidina Ørsted, 1845 Data deficient
F
Fabricia sabella (Ehrenberg, 1836) Data deficient
Fabricia stellaris (O.F. Müller, 1774) Data deficient
Fabriciola baltica Friedrich, 1939 Threatened to an unkown extent
Facelina auriculata (O.F. Müller, 1776) Schlanke Fadenschnecke Endangered
Facelina bostoniensis (Couthouy, 1838) Drummonds Fadenschnecke Least concern
Farrella repens (Farre, 1837) Data deficient
Favorinus branchialis (Rathke, 1806) Favorinus-Fadenschnecke Data deficient
Fenestrulina malusii (Audouin, 1826) Data deficient
Ficopomatus enigmaticus (Fauvel, 1923) Not evaluated
Filellum serpens (Hassall, 1848) Data deficient
Fiona pinnata (Eschscholtz, 1831) Extinct in Germany
Flabelligera affinis M. Sars, 1829 Data deficient
Flabellina pedata (Montagu, 1815) Rotviolette Fadenschnecke Rare
Flabellina pellucida (Alder & Hancock, 1843) Milchige Fadenschnecke Data deficient
Flabellina verrucosa (M. Sars, 1829) Rotrückige Fadenschnecke Vulnerable
Flustra foliacea (L., 1758) Blättermoostierchen Least concern
Flustrellidra hispida (Fabricius, 1780) Rare
Fredericella sultana (Blumenbach, 1779) Data deficient
Fridericia bulbosa (Rosa, 1887) Data deficient
G
Galathea dispersa Bate, 1859 Data deficient
Galathea intermedia Liljeborg, 1851 Near threatened
Galathea nexa Embleton, 1834 Extinct in Germany
Galathea squamifera Leach, 1814 Rare
Galathea strigosa (L., 1761) Rare
Galathowenia oculata (Zachs, 1923) Least concern
Gammarella fucicola (Leach, 1814) Rare
Gammarellus angulosus (Rathke, 1843) Rare
Gammarellus homari (Fabricius, 1779) Least concern
Gammaropsis maculata (Johnston, 1828) Data deficient
Gammaropsis melanops G.O. Sars, 1883 Least concern
Gammaropsis nitida (Stimpson, 1853) Least concern
Gammaropsis sophiae (Boeck, 1861) Data deficient
Gammarus crinicornis Stock, 1966 Data deficient
Gammarus duebeni Liljeborg, 1852 Threatened to an unkown extent
Gammarus finmarchicus Dahl, 1938 Data deficient
Gammarus inaequicauda Stock, 1966 Threatened to an unkown extent
Gammarus locusta (L., 1758) Near threatened
Gammarus oceanicus Segerstråle, 1947 Least concern
Gammarus pulex (L., 1758) Not evaluated
Gammarus roeselii Gervais, 1835 Not evaluated
Gammarus salinus Spooner, 1947 Least concern
Gammarus tigrinus Sexton, 1939 Not evaluated
Gammarus zaddachi Sexton, 1912 Least concern
Gari fervensis (Gmelin, 1791) Sandmuschel Least concern
Garveia franciscana (Torrey, 1902) Not evaluated
Garveia nutans Wright, 1859 Data deficient
Gattyana amondseni (Malmgren, 1867) Least concern
Gattyana cirrhosa (Pallas, 1766) Schuppenwurm Least concern
Geitodoris planata (Alder & Hancock, 1846) Granulierte Warzenschnecke Data deficient
Gibbula cineraria (L, 1758) Graue Kreiselschnecke Rare
Gibbula tumida (Montagu, 1803) Spitze Kreiselschnecke Data deficient
Gitana sarsi Boeck, 1871 Rare
Glycera alba (O.F. Müller, 1776) Data deficient
Glycera capitata Ørsted, 1843 Data deficient
Glycera celtica O'Connor, 1987 Data deficient
Glycera convoluta Keferstein, 1862 Data deficient
Glycera gigantea Quatrefages, 1865 Data deficient
Glycera lapidum Quatrefages, 1865 Data deficient
Glycera oxycephala Ehlers, 1887 Data deficient
Glycera rouxi Audouin & Milne-Edwards, 1833 Data deficient
Glycera tesselata Grube, 1840 Data deficient
Glycera unicornis Savigny in Lamarck, 1818 Data deficient
Glycinde nordmanni (Malmgren, 1866) Least concern
Glyphohesione klatti Friedrich, 1950 Threatened to an unkown extent
Gnathia dentata (G. O. Sars, 1872) Extinct in Germany
Gnathia maxillaris (Montagu, 1804) Extinct in Germany
Gnathia vorax (Lucas, 1849) Data deficient
Goneplax rhomboides (L., 1758) Rare
Goniada maculata Ørsted, 1843 Least concern
Goniada norvegica Ørsted, 1845 Data deficient
Goniadella bobretzkii (Annenkova, 1929) Least concern
Goniodoris nodosa (Montagu, 1808) Weiß-Transparente Goniodoris Data deficient
Gonothyraea loveni (Allman, 1859) Data deficient
Goodallia triangularis (Montagu, 1803) Sanddorn-Astarte Vulnerable
Gouldia minima (Montagu, 1803) Dreieckige Venusmuschel Rare
Grania postclitellochaeta (Knöllner, 1935) Threatened to an unkown extent
Guancha blanca Miklucho-Maclay, 1868 Data deficient
Gyptis propinqua Marion & Bobretzky, 1875 Rare
Gyptis rosea Marion, 1875 Data deficient
H
Halcampa duodecimcirrata (Sars, 1851) Critically endangered
Halecium halecinum (L., 1758) Rare
Halecium labrosum Alder, 1859 Data deficient
Halecium tenellum Hincks, 1861 Rare
Halichondria bowerbanki Burton, 1930 Rare
Halichondria panicea (Pallas, 1766) Brotkrumenschwamm Threatened to an unkown extent
Haliclona cinerea (Grant, 1826) Data deficient
Haliclona oculata (Pallas, 1766) Geweihschwamm Data deficient
Haliclona rosea (Bowerbank, 1866) Rare
Haliclona urceolus (Rathke & Vahl, 1806) Rare
Haliclystus auricula (Rathke, 1806) Rare
Halisarca dujardini Johnston, 1842 Gallertschwamm Data deficient
Halitholus yoldiaarcticae (Birula, 1897) Vulnerable
Halopteris catharina (Johnston, 1833) Data deficient
Haminoea exigua Schaefer, 1992 Data deficient
Hardametopa nasuta (Boeck, 1871) Least concern
Harmothoe antilopes McIntosh, 1876 Least concern
Harmothoe extenuata (Grube, 1840) Rare
Harmothoe imbricata (L., 1767) Data deficient
Harmothoe impar (Johnston, 1839) Least concern
Harmothoe longisetis (Grube, 1863) Least concern
Harpinia antennaria Meinert, 1890 Least concern
Harpinia crenulata (Boeck, 1871) Data deficient
Harpinia laevis G.O. Sars, 1891 Data deficient
Harpinia pectinata G.O. Sars, 1891 Data deficient
Hartlaubella gelatinosa (Pallas, 1766) Data deficient
Haustorius arenarius (Slabber, 1769) Data deficient
Hediste diversicolor (O.F. Müller, 1776) Seeringelwurm Least concern
Hemigrapsus sanguineus (de Haan, 1835) Not evaluated
Hemigrapsus takanoi Asakura & Watanabe, 2005 Asiatische Strandkrabbe Not evaluated
Hemilamprops roseus (Norman, 1863) Data deficient
Hemilepton nitidum (Turton, 1822) Rundliche Koffermuschel Data deficient
Henlea ventriculosa (d'Udekem, 1854) Data deficient
Henricia oculata (Pennant, 1777) Blutstern Data deficient
Hesionura elongata (Southern, 1914) Data deficient
Heteranomia squamula (L., 1758) Kleine Sattelmuschel Extinct in Germany
Heterochaeta costata Claparède, 1863 Least concern
Heteromastus filiformis (Claparède, 1864) "Gummiwurm" Least concern
Hiatella arctica (L., 1767) Nördlicher Felsenbohrer Least concern
Hiatella rugosa (L., 1767) Gemeiner Felsenbohrer Rare
Hippolyte longirostris (Czerniavsky, 1868) Least concern
Hippolyte varians Leach, 1814 Data deficient
Hippomedon denticulatus (Bate, 1857) Least concern
Homarus gammarus (L., 1758) (Europäischer) Hummer Endangered
Hyala vitrea (Montagu, 1803) Durchscheinendes Spiralhorn Data deficient
Hyalinella punctata (Hancock, 1850) Data deficient
Hyas araneus (L., 1758) Least concern
Hyas coarctatus Leach, 1816 Nordische Meerspinne Data deficient
Hydra oligactis Pallas, 1766 Brauner Polyp Not evaluated
Hydra vulgaris Pallas, 1766 Not evaluated
Hydractinia echinata (Fleming, 1828) Least concern
Hydractinia fucicola (Sars, 1857) Data deficient
Hydrallmania falcata (L., 1758) Korallenmoos Rare
Hydrobia acuta (Draparnaud, 1805) Übersehene Wattschnecke Data deficient
Hydroides norvegicus Gunnerus, 1768 Rare
Hypania invalida (Grube, 1860) Rare
Hyperia galba (Montagu, 1815) Least concern
Hyperoche medusarum (Krøyer, 1838) Rare
I
Idotea balthica (Pallas, 1772) Ostsee-Meerassel, Dreispitzige Meerassel Least concern
Idotea chelipes (Pallas, 1766) Krallenfüßige Meerassel Data deficient
Idotea emarginata (Fabricius, 1793) Data deficient
Idotea granulosa Rathke, 1843 Körnige Meerassel Data deficient
Idotea linearis (L., 1767) Stabförmige Meerassel Least concern
Idotea metallica Bosc, 1802 Not evaluated
Idotea neglecta G.O. Sars, 1897 Data deficient
Idotea pelagica Leach, 1815 Data deficient
Inachus phalangium (Fabricius, 1775) Data deficient
Iphimedia minuta G.O. Sars, 1882 Data deficient
Iphimedia obesa Rathke, 1843 Vulnerable
Iphinoe trispinosa (Goodsir, 1843) Least concern
Ischyrocerus anguipes Krøyer, 1838 Data deficient
J
Jaera albifrons Leach, 1814 Least concern
Janira maculosa Leach, 1814 Rare
Janolus cristatus (delle Chiaje, 1841) Gestreifte Dickkolbenschnecke Rare
Janua pagenstecheri (Quatrefages, 1865) Rare
Jasmineira elegans Saint Joseph, 1894 Rare
Jassa falcata (Montagu, 1808) Least concern
Jassa herdmani (Walker, 1893) Rare
Jassa marmorata Holmes, 1905 Least concern
Jassa pusilla (Sars, 1894) Rare
Jorunna tomentosa (Cuvier, 1804) Schwamm-Jorunna Data deficient
Jugaria granulata (L., 1767) Threatened to an unkown extent
K
Kefersteinia cirrata (Keferstein, 1862) Data deficient
Kirchenpaueria pinnata (L., 1758) Rare
Kurtiella bidentata (Montagu, 1803) Kleine Linsenmuschel Least concern
L
Labidoplax buskii (McIntosh, 1866) Büschelige Seegurke Rare
Lacuna pallidula (da Costa, 1778) Flache Grübchenschnecke Data deficient
Lacuna parva (da Costa, 1778) Kleine Grübchenschnecke Least concern
Lacuna vincta (Montagu, 1803) Gebänderte Grübchenschnecke Least concern
Laeospira corallinae (Silva & Knight-Jones, 1962) Rare
Laetmonice filicornis Kinberg, 1856 Data deficient
Laevicardium crassum (Gmelin, 1791) Least concern
Lafoea dumosa (Fleming, 1820) Rare
Lafoea pygmaea Hincks, 1868 Data deficient
Lafoeina tenuis Sars, 1874 Data deficient
Lagis koreni Malmgren, 1866 Gerader Köcherwurm Least concern
Lamellaria perspicua (L., 1758) Zarte Blättchenschnecke Rare
Lamprops fasciatus G.O. Sars, 1863 Rare
Lanice conchilega (Pallas, 1766) Bäumchenröhrenwurm Least concern
Laomedea angulata Hincks, 1861 Data deficient
Laomedea calceolifera (Hincks, 1871) Rare
Laomedea flexuosa Alder, 1857 Data deficient
Laomedea neglecta Alder, 1856 Data deficient
Laonice cirrata (M. Sars, 1851) Data deficient
Laonome kroeyeri Malmgren, 1866 Data deficient
Lekanesphaera hookeri (Leach, 1814) Threatened to an unkown extent
Lekanesphaera rugicauda (Leach, 1814) Vulnerable
Lembos websteri Bate, 1857 Least concern
Lepidepecreum longicornis (Bate & Westwood, 1862) Least concern
Lepidochitona cinerea (L., 1767) Rändel-Käferschnecke Vulnerable
Lepidonotus squamatus (L., 1758) Least concern
Leptasterias arctica (Murdoch, 1885) Extinct in Germany
Leptasterias muelleri (M. Sars, 1846) Müllers Seestern Extinct in Germany
Leptocheirus hirsutimanus (Bate, 1862) Rare
Leptocheirus pectinatus (Norman, 1869) Rare
Leptocheirus pilosus Zaddach, 1844 Least concern
Leptochiton asellus (Gmelin, 1791) Assel-Käferschnecke Vulnerable
Leptochiton cancellatus (G.B. Sowerby II, 1840) Kleine Käferschnecke Data deficient
Lepton squamosum (Montagu, 1803) Durchsichtige Koffermuschel Least concern
Leptopentacta elongata (Düben & Koren, 1846) Threatened to an unkown extent
Leptosynapta bergensis (Östergren, 1905) Data deficient
Leptosynapta inhaerens (O.F. Müller, 1776) Wurmseegurke Data deficient
Leptosynapta minuta (Becher, 1906) Rare
Leucandra fistulosa (Johnston, 1842) Vulnerable
Leuckartiara octona (Fleming, 1823) Rare
Leucon nasica (Krøyer, 1841) Data deficient
Leuconia johnstoni Carter, 1871 Rare
Leuconia nivea (Grant, 1826) Rare
Leucosolenia botryoides (Ellis & Solander, 1786) Rare
Leucosolenia complicata (Montagu, 1818) Rare
Leucosolenia fragilis (Haeckel, 1870) Data deficient
Leucosolenia variabilis (Haeckel, 1870) Rare
Leucothoe incisa Robertson, 1892 Least concern
Leucothoe lilljeborgi Boeck, 1861 Data deficient
Leucothoe procera Bate, 1857 Data deficient
Leucothoe spinicarpa (Abildgaard, 1789) Rare
Levinsenia gracilis (Tauber, 1879) Least concern
Ligia oceanica (L., 1767) Klippenassel Least concern
Limacia clavigera (O.F. Müller, 1776) Limacia Least concern
Limapontia capitata (O.F. Müller, 1774) Breitköpfige Lanzettschnecke Threatened to an unkown extent
Limapontia depressa Alder & Hancock, 1862 Flache Lanzettschnecke Vulnerable
Limapontia senestra (Quatrefages, 1844) Finger-Lanzettschnecke Data deficient
Limnodrilus claparedeanus Ratzel, 1868 Least concern
Limnodrilus hoffmeisteri Claparède, 1862 Least concern
Limnodrilus profundicola (Verrill, 1873) Data deficient
Limnodrilus udekemianus Claparède, 1862 Least concern
Limnoria lignorum (Rathke, 1799) Bohrassel Data deficient
Liocarcinus depurator (L., 1758) (Schwimmkrabbe) Least concern
Liocarcinus holsatus (Fabricius, 1798) Gemeine Schwimmkrabbe Least concern
Liocarcinus marmoreus (Leach, 1814) Marmorfarbige Schwimmkrabbe Vulnerable
Liocarcinus navigator (Herbst, 1794) Glattstirnige Schwimmkrabbe Rare
Liocarcinus pusillus (Leach, 1815) Kleine Schwimmkrabbe Vulnerable
Liocarcinus zariquieyi Gordon, 1968 Rare
Lipobranchus jeffreysii (McIntosh, 1869) Not evaluated
Littorina compressa Jeffreys, 1865 Extinct in Germany
Littorina fabalis (Turton, 1825) Flache Strandschnecke Data deficient
Littorina littorea (L., 1758) Gemeine Strandschnecke Least concern
Littorina obtusata (L., 1758) Stumpfe Strandschnecke Least concern
Littorina saxatilis (Olivi, 1792) Raue Strandschnecke Least concern
Lophopus crystallinus (Pallas, 1768) Data deficient
Lovenella clausa (Lovén, 1836) Data deficient
Lucinella divaricata (L., 1758) Weißliche Mondmuschel Least concern
Lucinoma borealis (L., 1758) Nördliche Mondmuschel Least concern
Lumbricillus arenarius (Michaelsen, 1889) Data deficient
Lumbricillus lineatus (O.F. Müller, 1774) Data deficient
Lumbriclymene cylindricaudata M. Sars in G.O. Sars, 1872 Data deficient
Lumbriculus variegatus (O.F. Müller, 1774) Data deficient
Lumbrineris aniara (Fauchald, 1974) Data deficient
Lumbrineris fragilis (O.F. Müller, 1776) Least concern
Lumbrineris gracilis Ehlers, 1868 Least concern
Lumbrineris latreilli Audouin & Milne-Edwards, 1834 Rare
Lumbrineris magnidentata Winsnes, 1981 Data deficient
Lumbrineris tetraura (Schmarda, 1861) Data deficient
Lutraria lutraria (L., 1758) Ottermuschel Near threatened
Lutraria magna (da Costa, 1778) Längliche Ottermuschel Rare
Lysilla loveni Malmgren, 1866 Rare
M
Macoma balthica (L., 1758) Baltische Tellmuschel Least concern
Macoma calcarea (Gmelin, 1791) Kalk-Plattmuschel Critically endangered
Macropodia linaresi Forest & Zariquiey-Alvarez, 1964 Data deficient
Macropodia parva van Noort & Adema, 1985 Data deficient
Macropodia rostrata (L., 1761) Gespenstkrabbe Least concern
Mactra stultorum (L., 1758) Gemeine Trogmuschel Threatened to an unkown extent
Magelona alleni Wilson, 1958 Least concern
Magelona filiformis Wilson, 1959 Least concern
Magelona johnstoni Fiege, Licher & Mackie, 2000 Least concern
Magelona minuta Eliason, 1962 Data deficient
Magelona mirabilis (Johnston, 1865) Data deficient
Magelona wilsoni Glémarec, 1966 Data deficient
Maja squinado (Herbst, 1788) Data deficient
Malacoceros fuliginosus (Claparède, 1870) Rare
Malacoceros tetracerus (Schmarda, 1861) Data deficient
Maldane sarsi Malmgren, 1865 Data deficient
Malmgreniella andreapolis (McIntosh, 1874) Data deficient
Malmgreniella arenicolae (Saint Joseph, 1888) Data deficient
Malmgreniella castanea (McIntosh, 1876) Data deficient
Malmgreniella glabra (Malmgren, 1866) Least concern
Malmgreniella ljungmani (Malmgren, 1867) Least concern
Malmgreniella lunulata (Delle Chiaje, 1830) Least concern
Malmgreniella marphysae (McIntosh, 1876) Data deficient
Manayunkia aestuarina (Bourne, 1883) Threatened to an unkown extent
Manzonia crassa (Kahnmacher, 1798) Data deficient
Marenzelleria neglecta Sikorski & Bick, 2004 Not evaluated
Marenzelleria viridis (Verrill, 1873) Not evaluated
Marenzelleria wireni Augener, 1913 Not evaluated
Marionina spicula (Leuckart, 1847) Least concern
Marshallora adversa (Montagu, 1803) Verkehrtschnecke, Linksnadel Data deficient
Medicorophium affine (Bruzelius, 1859) Data deficient
Mediomastus fragilis Rasmussen, 1973 Data deficient
Megaluropus agilis Hoeck, 1889 Near threatened
Megamphopus cornutus Norman, 1869 Least concern
Melanella alba (da Costa, 1778) Weiße Pfriemschnecke Data deficient
Melanella conoidea (Kurtz & Stimpson, 1851) Data deficient
Melarhaphe neritoides (L., 1758) Zwerg-Strandschnecke Extinct in Germany
Melicertum octocostatum (Sars, 1835) Data deficient
Melinna cristata (M. Sars, 1851) Data deficient
Melita dentata (Krøyer, 1842) Data deficient
Melita hergensis Reid, 1939 Data deficient
Melita palmata (Montagu, 1804) Near threatened
Melphidippella macra (Norman, 1869) Data deficient
Membranipora membranacea (L., 1767) Seerinde Near threatened
Membraniporella nitida (Johnston, 1838) Data deficient
Metopa alderi (Bate, 1857) Near threatened
Metopa borealis Sars, 1882 Near threatened
Metopa pusilla Sars, 1892 Least concern
Metridium dianthus (Ellis, 1768) Data deficient
Metridium senile (L., 1761) Seenelke Threatened to an unkown extent
Microdeutopus anomalus (Rathke, 1843) Rare
Microdeutopus gryllotalpa Costa, 1853 Least concern
Microhedyle glandulifera (Kowalewsky, 1901) Milchigweiße Sandlücken-Nacktschnecke Extinct in Germany
Microjassa cumbrensis (Stebbing & Robertson, 1891) Rare
Microphthalmus aberrans (Webster & Benedict, 1887) Least concern
Microphthalmus fragilis Bobretzky, 1870 Data deficient
Microphthalmus listensis Westheide, 1967 Data deficient
Microphthalmus sczelkowii Metschnikow, 1865 Rare
Microphthalmus similis Bobretzky, 1870 Data deficient
Microporella ciliata (Pallas, 1766) Rare
Microprotopus longimanus Chevreux, 1887 Least concern
Microprotopus maculatus Norman, 1867 Least concern
Microspio mecznikowianus (Claparède, 1869) Data deficient
Mimachlamys varia (L., 1758) Bunte Kammmuschel Least concern
Modiolarca subpicta (Cantraine, 1835) Marmorierte Bohnenmuschel Threatened to an unkown extent
Modiolula phaseolina (Philippi, 1844) Extinct in Germany
Modiolus modiolus (L., 1758) Pferdemuschel, Große Miesmuschel Endangered
Molgula citrina Alder & Hancock, 1848 Least concern
Molgula complanata Alder & Hancock, 1870 Rare
Molgula manhattensis (De Kay, 1843) Data deficient
Molgula oculata Forbes, 1848 Data deficient
Molgula provisionalis van Name, 1945 Data deficient
Molgula tubifera (Oersted, 1844) Rare
Monocorophium ascherusicum (Costa, 1857) Data deficient
Monocorophium insidiosum (Crawford, 1937) Least concern
Monocorophium sextonae (Crawford, 1937) Not evaluated
Monoculodes carinatus (Bate, 1857) Data deficient
Monophorus perversus (L., 1758) Verkehrtschnecke Threatened to an unkown extent
Monoporeia affinis Lindström, 1855 Vulnerable
Monopseudocuma gilsoni (Gilson, 1906) Data deficient
Monopylephorus irroratus (Verrill, 1873) Near threatened
Monopylephorus rubroniveus Levinsen, 1884 Threatened to an unkown extent
Montacuta substriata (Montagu, 1808) Konkave Linsenmuschel Least concern
Musculus discors (L., 1767) Grüne Bohnenmuschel Threatened to an unkown extent
Musculus niger J.E. Gray, 1824 Schwarze Bohnenmuschel Threatened to an unkown extent
Mya arenaria L., 1758 Sandklaffmuschel Least concern
Mya truncata L., 1758 Abgestutzte Klaffmuschel Endangered
Mycale macilenta (Bowerbank, 1866) Rare
Myosotella myosotis (Draparnaud, 1801) Mäuseöhrchen Critically endangered
Myrianida brachycephala (Marenzeller, 1874) Rare
Myrianida edwardsi (Saint Joseph, 1887) Data deficient
Myrianida inermis (Saint Joseph, 1887)  Rare
Myrianida prolifera (O.F. Müller, 1788) Least concern
Myrianida quindecimdentata (Langerhans, 1884) Data deficient
Myriochele heeri Malmgren, 1867 Rare
Mysia undata (Pennant, 1777) Mysia Least concern
Mysta picta (Quatrefages, 1865) Rare
Mystides southerni (Banse, 1954) Data deficient
Mytilopsis leucophaeata (Conrad, 1831) Brackwasser-Dreiecksmuschel Not evaluated
Mytilus edulis L., 1758 Miesmuschel Least concern
Mytilus trossulus Gould, 1850 Pazifische Miesmuschel Data deficient
Myxilla incrustans (Johnston, 1842) Rare
N
Nais barbata O.F. Müller, 1773 Data deficient
Nais elinguis O.F. Müller, 1773 Least concern
Nais variabilis Piguet, 1906 Data deficient
Nannonyx goesi (Boeck, 1871) Data deficient
Nassarius incrassatus (Ström, 1768) Dicklippige Netzreusenschnecke Threatened to an unkown extent
Nassarius reticulatus (L., 1758) Gemeine Netzreusenschnecke Threatened to an unkown extent
Natatolana borealis (Lilljeborg, 1851) Data deficient
Neanthes fucata (Savigny in Lamarck, 1818) Least concern
Necora puber (L., 1767) Behaarte Schwimmkrabbe Least concern
Nemertesia ramosa (Lamarck, 1816) Data deficient
Nemopsis bachei (L. Agassiz, 1849) Not evaluated
Neoamphitrite figulus (Dalyell, 1853) Least concern
Neoamphitrite groenlandica (Malmgren, 1866) Rare
Neoleanira tetragona (Ørsted, 1845) Rare
Nephrops norvegicus (L., 1758) Kaisergranat, Norwegischer Hummer Threatened to an unkown extent
Nephtys assimilis Ørsted, 1843 Least concern
Nephtys caeca (Fabricius, 1780) Least concern
Nephtys ciliata (O.F. Müller, 1776) Least concern
Nephtys cirrosa (Ehlers, 1868) Least concern
Nephtys hombergii Savigny in Lamarck, 1818 Least concern
Nephtys incisa Malmgren, 1865 Least concern
Nephtys kersivalensis McIntosh, 1908 Data deficient
Nephtys longosetosa Ørsted, 1842 Least concern
Nephtys paradoxa Malm, 1874 Rare
Nephtys pente Rainer, 1984 Data deficient
Neptunea antiqua (L., 1758) Spindelschnecke Threatened to an unkown extent
Nereimyra punctata (O.F. Müller, 1788) Threatened to an unkown extent
Nereis pelagica L., 1758 Least concern
Nereis zonata Malmgren, 1867 Data deficient
Nerilla antennata O. Schmidt, 1848 Threatened to an unkown extent
Nicolea venustula (Montagu, 1818) Threatened to an unkown extent
Nicolea zostericola Ørsted, 1844 Least concern
Nicomache lumbricalis (Fabricius, 1780) Least concern
Nicomache minor Arwidsson, 1906 Data deficient
Nicomache personata Johnson, 1901 Data deficient
Nothria conchylega (M. Sars, 1835) Data deficient
Notomastus latericeus M. Sars, 1851 Least concern
Notophyllum foliosum (Sars, 1835) Data deficient
Nototropis falcatus (Metzger, 1871) Least concern
Nucella lapillus (L., 1758) Nördliche Purpurschnecke Endangered
Nucula nitidosa Winckworth, 1930 Glänzende Nussmuschel Least concern
Nucula nucleus (L., 1758) Große Nussmusschel Critically endangered
Nuculana minuta (O.F. Müller, 1776) Kleine Schnabelmuschel Least concern
Nuculana pernula O.F. Müller, 1779 Große Schnabelmuschel Least concern
Nymphon brevirostre Hodge, 1863 Zierliche Asselspinne Least concern
Nymphon gracile Leach, 1814 Least concern
Nymphon grossipes (Fabricius, 1780) Data deficient
O
Obelia bidentata Clarke, 1875 Data deficient
Obelia dichotoma (L., 1758)  Data deficient
Obelia geniculata (L., 1758) Data deficient
Obelia longissima (Pallas, 1766) Data deficient
Octopus vulgaris Cuvier, 1797 Gemeiner Krake Rare
Odostomia eulimoides Hanley, 1844 Blasse Pyramidenschnecke Rare
Odostomia scalaris MacGillivray, 1843 Gestufte Pyramidenschnecke Least concern
Odostomia unidentata (Montagu, 1803) Einzahn-Pyramidenschnecke Rare
Omalogyra atomus (Philippi, 1841) Flache Zwergtellerschnecke Data deficient
Onchidoris aspera (Alder & Hancock, 1842) Raue Sternschnecke Extinct in Germany
Onchidoris bilamellata (Linnaeus, 1767) Braungefleckte Sternschnecke Least concern
Onchidoris depressa (Alder & Hancock, 1842) Least concern
Onchidoris fusca (O.F. Müller, 1776) Extinct in Germany
Onchidoris muricata (O.F. Müller, 1776) Blassgraue Sternschnecke Least concern
Onchidoris pusilla (Alder & Hancock, 1845) Least concern
Oncousoecia dilatans (Johnston, 1847) Data deficient
Ondina divisa (J. Adams, 1797) Geteilte Pyramidenschnecke, Undine Least concern
Onoba aculeus (Gould, 1841) Spitze Kleinschnecke Rare
Onoba semicostata (Montagu, 1803) Halbgerippte Kleinschnecke Least concern
Opercularella lacerata (Johnston, 1847) Data deficient
Opercularella pumila Clark, 1875 Data deficient
Ophelia limacina (Rathke, 1843) Least concern
Ophelia rathkei McIntosh, 1908 Near threatened
Ophelina acuminata Ørsted, 1843 Least concern
Ophelina minima Hartmann-Schröder, 1974 Data deficient
Ophelina modesta Støp-Bowitz, 1958 Data deficient
Ophidonais serpentina (O.F. Müller, 1773) Data deficient
Ophiocten affinis (Lütken, 1858) Data deficient
Ophiodromus flexuosus (Delle Chiaje, 1827) Least concern
Ophiopholis aculeata (L., 1767) Höhlen-Schlangenstern Data deficient
Ophiothrix fragilis (Abildgaard in O.F. Müller, 1789) Zerbrechlicher Schlangenstern Near threatened
Ophiura albida Forbes, 1839 Heller, Kleiner Schlangenstern Least concern
Ophiura ophiura (L., 1758) Schuppiger, Großer Schlangenstern Least concern
Ophiura sarsii Lütken, 1855 Data deficient
Ophryotrocha gracilis Huth, 1933 Data deficient
Ophryotrocha puerilis siberti (McIntosh, 1885) Data deficient
Orbinia armandi (McIntosh, 1910) Data deficient
Orbinia cuvierii (Audouin & Milne-Edwards, 1833) Extinct in Germany
Orbinia latreilli (Audouin & Milne-Edwards, 1833) Rare
Orbinia sertulata (Savigny, 1820) Data deficient
Orchestia cavimana Heller, 1865 Data deficient
Orchestia gammarellus (Pallas, 1766) Küstenhüpfer Near threatened
Orchomene humilis (Costa, 1853) Data deficient
Orchomenella minuta (Krøyer, 1846) Data deficient
Orchomenella nana (Krøyer, 1846) Least concern
Orchomenella pinguis (Boeck, 1961) Extinct in Germany
Oscarella lobularis (Schmidt, 1862) Rare
Ostrea edulis L., 1758 Europäische, Gemeine Auster Critically endangered
Othomaera othonis (Milne-Edwards, 1830) Data deficient
Owenia fusiformis Delle Chiaje, 1841 Least concern
P
Pachycordyle navis (Millard, 1959) Data deficient
Pagurus bernhardus (L., 1758) Einsiedlerkrebs Least concern
Pagurus pubescens Krøyer, 1838 Endangered
Palaemon adspersus Rathke, 1837 Near threatened
Palaemon elegans Rathke, 1837 Least concern
Palaemon longirostris H. Milne-Edwards, 1837 Data deficient
Palaemon macrodactylus Rathbun, 1902 Not evaluated
Palaemonetes varians (Leach, 1814) Near threatened
Palio dubia (M. Sars, 1829) Gefleckte Hörnchenschnecke Data deficient
Palio nothus (Johnston, 1838) Rare
Palliolum tigerinum (O.F. Müller, 1776) Extinct in Germany
Paludicella articulata (Ehrenberg, 1831) Data deficient
Pandalina brevirostris (Rathke, 1843) Threatened to an unkown extent
Pandalus borealis Krøyer, 1838 Tiefseegarnele Least concern
Pandalus montagui Leach, 1814 Least concern
Paracentrotus lividus (Lamarck, 1816) Stein-Seeigel Threatened to an unkown extent
Paradoneis eliasoni Mackie, 1991 Least concern
Paradoneis lyra (Southern, 1914) Least concern
Paraiptasia radiata (Stimpson, 1856) Data deficient
Parajassa pelagica (Leach, 1814) Rare
Paramphilochoides odontonyx (Boeck, 1871) Least concern
Paramphinome jeffreysii (McIntosh, 1868) Least concern
Paranais frici Hrabe, 1941 Threatened to an unkown extent
Paranais litoralis (O.F. Müller, 1784) Threatened to an unkown extent
Paraonis fulgens (Levinsen, 1884) Least concern
Parapleustes assimilis (Sars, 1882) Least concern
Parapleustes bicuspis (Krøyer, 1838) Rare
Pariambus typicus (Krøyer, 1844) Least concern
Parvicardium exiguum (Gmelin, 1791) Dreieckige Herzmuschel Critically endangered
Parvicardium hauniense (Høpner Petersen & Russell, 1971) Kopenhagener Herzmuschel Rare
Parvicardium pinnulatum (Conrad, 1831) Ovale Herzmuschel Data deficient
Parvicardium scabrum (Philippi, 1844) Weißliche Herzmuschel Data deficient
Parvipalpus capillaceus (Chevreux, 1888)  Data deficient
Patella pellucida L., 1758 Durchscheinende Napfschnecke Least concern
Patella vulgata L., 1758 Gemeine Napfschnecke Data deficient
Peachia cylindrica (Reid, 1848) Data deficient
Pecten maximus L., 1758 Große Pilgermuschel Data deficient
Pectinaria belgica (Pallas, 1766) Least concern
Pelagobia longicirrata Gravier, 1911 Data deficient
Peloscolex ferox (Eisen, 1879) Data deficient
Peringia ulvae (Pennant, 1777) Glatte Wattschnecke Least concern
Perioculodes longimanus (Bate & Westwood, 1868) Least concern
Pestarella tyrrhena (Petagna, 1792) Data deficient
Petricolaria pholadiformis (Lamarck, 1818) Amerikanische Bohrmuschel Not evaluated
Phaxas pellucidus (Pennant, 1777) Durchscheinende Scheidenmuschel Least concern
Pherusa flabellata (M. Sars in G.O. Sars, 1872) Least concern
Pherusa plumosa (O.F. Müller, 1776) Data deficient
Phialella quadrata (Forbes, 1848) Data deficient
Philine aperta (L., 1767) Offene Seemandel Least concern
Philine catena (Montagu, 1803) Data deficient
Philine punctata (J. Adams, 1800) Kleine Seemandel Least concern
Philine scabra (O.F. Müller, 1776) Raue Seemandel Rare
Philocheras bispinosus (Hailstone, 1835) Data deficient
Philocheras trispinosus (Hailstone in Hailstone & Westwood, 1835) Data deficient
Pholas dactylus L., 1758 Dattelmuschel Rare
Pholoe assimilis Ørstedt, 1845 Data deficient
Pholoe baltica Ørstedt, 1843 Least concern
Pholoe inornata Johnston, 1839 Rare
Photis longicaudata (Bate & Westwood, 1862) Near threatened
Photis reinhardi Krøyer,1842 Least concern
Phoxichilidium femoratum (Rathke, 1799) Rare
Phoxocephalus holbolli (Krøyer, 1842) Data deficient
Phtisica marina Slabber, 1769 Least concern
Phyllodoce citrina Malmgren, 1865 Threatened to an unkown extent
Phyllodoce groenlandica Ørsted, 1842 Least concern
Phyllodoce laminosa Savigny in Lamarck, 1818 Data deficient
Phyllodoce lineata (Claparède, 1870) Data deficient
Phyllodoce longipes Kinberg, 1866 Data deficient
Phyllodoce maculata (L., 1767) Least concern
Phyllodoce mucosa Ørsted, 1843 Least concern
Phyllodoce rosea (McIntosh, 1877) Least concern
Pilumnus hirtellus (L., 1761) Vulnerable
Pinnotheres pisum (L., 1767) Muschelwächter Data deficient
Pirimela denticulata (Montagu, 1808) Extinct in Germany
Pisidia longicornis (L., 1767) Least concern
Pisione remota (Southern, 1914) Least concern
Plagioecia patina (Lamarck, 1816) Threatened to an unkown extent
Plagioecia sarniensis (Norman, 1864) Data deficient
Platorchestia platensis (Krøyer, 1845) Data deficient
Platynereis dumerilii (Audouin & Milne-Edwards, 1833) Threatened to an unkown extent
Pleraplysilla minchini Topsent, 1905 Rare
Pleurocrypta longibranchiata (Bate & Westwood, 1868) Data deficient
Pleurogonium rubicundum (G.O. Sars, 1864) Rare
Plumatella emarginata Allman, 1844 Data deficient
Plumatella fruticosa Allman, 1844 Data deficient
Plumatella fungosa (Pallas, 1768) Data deficient
Plumatella repens (L., 1758) Data deficient
Plumularia setacea (L., 1758) Data deficient
Podarkeopsis helgolandica (Hilbig & Dittmer, 1979) Least concern
Pododesmus patelliformis (L., 1761) Große Sattelmuschel Least concern
Poecilochaetus serpens Allen, 1904 Least concern
Polycera quadrilineata (O.F. Müller, 1776) Gestreifte Hörnchenschnecke Least concern
Polycirrus aurantiacus Grube, 1860 Rare
Polycirrus medusa Grube, 1850 Data deficient
Polyclinum aurantium Milne-Edwards 1841 Rare
Polydora ciliata (Johnston, 1838) Least concern
Polydora cornuta Bosc, 1802 Least concern
Polygordius appendiculatus Fraipont, 1887 Near threatened
Polygordius lacteus Schneider, 1868 Near threatened
Polymastia boletiformis (Lamarck, 1815) Rare
Polymastia penicillus (Montagu, 1818) Rare
Polyphysia crassa (Ørsted, 1843) Vulnerable
Pontaster tenuispinus (Düben & Koren, 1846) Data deficient
Pontocrates altamarinus (Bate & Westwood, 1862) Least concern
Pontocrates arenarius (Bate, 1858) Least concern
Pontogammarus robustoides (G.O. Sars, 1894) Not evaluated
Pontophilus spinosus (Leach, 1815) Rare
Pontoporeia femorata Krøyer, 1842 Near threatened
Porcellana platycheles (Pennant, 1777) Data deficient
Portumnus latipes (Pennant, 1777) Schwimmkrabbe Least concern
Potamothrix bavaricus (Oschman, 1913) Threatened to an unkown extent
Potamothrix hammoniensis (Michaelsen, 1901) Data deficient
Potamothrix heuscheri (Bretscher, 1900) Threatened to an unkown extent
Potamothrix moldaviensis Vejdovsky & Mrazek, 1902 Least concern
Potamothrix vejdovskyi (Hrabe, 1941) Threatened to an unkown extent
Praxillella praetermissa (Malmgren, 1865) Data deficient
Praxillura longissima Arwidsson, 1906 Data deficient
Prionospio banyulensis Laubier, 1966 Data deficient
Prionospio cirrifera Wirén, 1883 Rare
Prionospio malmgreni Claparède, 1869 Data deficient
Prionospio multibranchiata E. Berkeley, 1927 Data deficient
Prionospio steenstrupi Malmgren, 1867 Least concern
Proceraea cornuta (Agassiz, 1862) Least concern
Proceraea prismatica (O.F. Müller, 1776) Least concern
Processa canaliculata Leach, 1815 Near threatened
Processa modica Williamson, 1979 Data deficient
Processa nouveli holthuisi Al-Adhub & Williamson, 1975 Least concern
Processa parva Holthuis, 1951 Data deficient
Proclymene muelleri (Sars, 1856) Not evaluated
Propappus volki Michaelsen, 1916 Data deficient
Propebela assimilis (G.O. Sars, 1878) Extinct in Germany
Propebela turricula (Montagu, 1803) Treppengiebelchen Least concern
Prosphaerosyllis tetralix (Eliason, 1920) Data deficient
Protodorvillea kefersteini (McIntosh, 1869) Least concern
Protodriloides chaetifer (Remane, 1926) Data deficient
Protodrilus purpureus (Schneider, 1868) Extinct in Germany
Protohydra leuckarti Greeff, 1870 Data deficient
Protomedeia fasciata Krøyer, 1842 Rare
Protosuberites epiphytum (Lamarck, 1815) Rare
Psammechinus miliaris (P.L.S. Müller, 1771) Strandseeigel Least concern
Psammodrilus balanoglossoides Swedmark, 1952 Rare
Psammoryctides albicola (Michaelsen, 1901) Data deficient
Psammoryctides barbatus (Grube, 1891) Data deficient
Pseudione borealis Caspers, 1939 Data deficient
Pseudione callianassae Kossmann, 1881 Data deficient
Pseudocuma longicorne (Bate, 1858) Data deficient
Pseudocuma simile G.O. Sars, 1900 Least concern
Pseudomystides limbata (Saint Joseph, 1888) Rare
Pseudopolydora antennata (Claparède, 1869) Data deficient
Pseudopolydora pulchra (Carazzi, 1895) Least concern
Pseudopotamilla reniformis (O.F. Müller, 1771) Data deficient
Pseudoprotella phasma (Montagu, 1804) Data deficient
Pterolysippe vanelli (Fauvel, 1936) sensu Eliason, 1955 Data deficient
Puncturella noachina (L., 1771) Nordische Lochschnecke Least concern
Pusillina inconspicua (Alder, 1844) Gefleckte Zwergschnecke Least concern
Pycnogonum litorale (Strom, 1762) Knotige Asselspinne Data deficient
Pygospio elegans Claparède, 1863 Least concern
R
Raphitoma aequalis Jeffreys, 1867 Extinct in Germany
Raphitoma leufroyi (Michaud, 1827) Data deficient
Raphitoma linearis (Montagu, 1803) Zierliche Nadelschnecke Rare
Rathkea octopunctata (M. Sars, 1835) Data deficient
Retusa obtusa (Montagu, 1803) Zugespitzte Tönnchenschnecke Least concern
Retusa truncatula (Bruguière, 1792) Abgestutzte Tönnchenschnecke Least concern
Rhabdomolgus ruber Keferstein, 1862 Data deficient
Rhithropanopeus harrisii (Gould, 1841) Not evaluated
Rhizocaulus verticillatus (L., 1758) Threatened to an unkown extent
Rhizodrilus pilosus (Goodrich, 1892) Data deficient
Rhizorhagium roseum M. Sars, 1874 Data deficient
Rhodine gracilior Tauber, 1879 Data deficient
Rhodine loveni Malmgren, 1865 Data deficient
Rissoa membranacea (J. Adams, 1800) Pergament-Rissoe Near threatened
Rissoa parva (da Costa, 1778) Komma-Zwergschnecke Near threatened
Rissoa variabilis (von Mühlfeldt, 1824) Extinct in Germany
Rissoa violacea Desmarest, 1814 Violette Rissoe Data deficient
Roxania utriculus (Brocchi, 1814) Least concern
S
Sabella spallanzani (Gmelin, 1791) Schlickröhrenwurm Extinct in Germany
Sabellaria alveolata (L., 1767) Rare
Sabellaria spinulosa Leuckart, 1849 Sandkoralle, Pümpwurm Endangered
Saduria entomon (L., 1758) Riesenassel Threatened to an unkown extent
Sagartia elegans (Dalyell, 1848) Data deficient
Sagartia troglodytes (Price in Johnston, 1847) Data deficient
Sagartiogeton laceratus (Dalyell, 1848) Rare
Sagartiogeton undatus (O.F. Müller, 1778) Schlammrose, Schlangenhaar-Seerose Vulnerable
Sagartiogeton viduatus (O.F. Müller, 1776) Data deficient
Sarsia lovenii (M. Sars, 1846) Data deficient
Sarsia tubulosa (M. Sars, 1835) Near threatened
Saxicavella jeffreysi Winckworth, 1930 Fragiler Felsenbohrer Least concern
Scalibregma inflatum Rathke, 1843 Threatened to an unkown extent
Schizomavella linearis (Hassall, 1841) Data deficient
Schizoporella errata (Waters, 1878) Rare
Schizoporella unicornis (Johnston in Wood, 1844) Rare
Scolanthus callimorphus Gosse, 1853 Data deficient
Scolelepis bonnieri (Mesnil, 1896) Least concern
Scolelepis foliosa (Audouin & Milne-Edwards, 1833) Least concern
Scolelepis korsuni Sikorski, 1994 Data deficient
Scolelepis squamata (O.F. Müller, 1806) Least concern
Scolelepis tridentata (Southern, 1914) Data deficient
Scoloplos armiger (O.F. Müller, 1776) Least concern
Scopelocheirus hopei (Costa, 1851) Least concern
Scrobicularia plana (da Costa, 1778) Pfeffermuschel Critically endangered
Scruparia chelata (L., 1758) Rare
Scrupocellaria reptans (L., 1758) Rare
Scrupocellaria scrupea Busk, 1852 Extinct in Germany
Scrupocellaria scruposa (L., 1758) Rare
Securiflustra securifrons (Pallas, 1766) Rare
Semibalanus balanoides (L., 1758) Gemeine Seepocke Least concern
Sepia officinalis L., 1758 Gemeiner Tintenfisch Not evaluated
Sepiola atlantica d'Orbigny, 1839 Atlantische Sepiole Data deficient
Sertularella mediterranea Hartlaub, 1901 Data deficient
Sertularella polyzonias (L., 1758) Rare
Sertularella rugosa (L., 1758) Rare
Sertularia cupressina L., 1758 Zypressenmoos, Seemoos Threatened to an unkown extent
Sertularia tenera G.O. Sars, 1874 Data deficient
Sigalion mathildae Audouin & Milne-Edwards, 1830 Vulnerable
Sigalion squamosus Delle Chiaje, 1830 Data deficient
Siphonoecetes kroyeranus Bate, 1856 Least concern
Siphonoecetes striatus Myers & McGrath, 1979 Data deficient
Skeneopsis planorbis (O. Fabricius, 1780) Gemeine Zwergtellerschnecke Endangered
Smittina landsborovii (Johnston, 1847) Rare
Solen marginatus Pulteney, 1799 Extinct in Germany
Spatangus purpureus O.F. Müller, 1776 Violetter Herzseeigel Critically endangered
Sphaerodoropsis baltica (Reimers, 1933) Data deficient
Sphaerodoropsis minuta (Webster & Benedict, 1887) Least concern
Sphaerodorum gracilis (Rathke, 1843) Least concern
Sphaerosyllis hystrix Claparède, 1863 Rare
Spio armata (Thulin, 1957) Data deficient
Spio decoratus Bobretzky, 1870 Data deficient
Spio filicornis (O.F. Müller, 1776) Least concern
Spio goniocephala Thulin, 1957 Least concern
Spio martinensis Mesnil, 1896 Least concern
Spiophanes bombyx (Claparède, 1870) Least concern
Spiophanes kroyeri Grube, 1860 Least concern
Spirobranchus lamarcki (Quatrefages, 1866) Rare
Spirobranchus triqueter (L., 1758) Dreikantwurm Least concern
Spirontocaris spinus (Sowerby, 1805) Extinct in Germany
Spirorbis spirorbis (L., 1758) Posthörnchenwurm Threatened to an unkown extent
Spirorbis tridentatus Levinsen, 1883 Threatened to an unkown extent
Spisula elliptica (Brown, 1827) Elliptische Trogmuschel Endangered
Spisula solida (L., 1758) Dickschalige Trogmuschel Threatened to an unkown extent
Spisula subtruncata (da Costa, 1778) Gedrungene Trogmuschel Threatened to an unkown extent
Spondylus sinensis Schreibers, 1793 Extinct in Germany
Spongilla lacustris (L., 1759) (Süßwasserschwamm) Not evaluated
Stauridiosarsia spongicola (Anger, 1972) Data deficient
Stenothoe marina (Bate, 1856) Least concern
Stenothoe monoculoides (Montagu, 1815) Rare
Stenula rubrovittata Sars, 1883 Data deficient
Sthenelais boa (Johnston, 1833) Threatened to an unkown extent
Sthenelais limicola (Ehlers, 1864) Least concern
Streblospio shrubsolii (Buchanan, 1890) Near threatened
Streptosyllis arenae Webster & Benedict, 1884 Data deficient
Streptosyllis websteri Southern, 1914 Data deficient
Striarca lactea (L., 1758) Least concern
Strongylocentrotus droebachiensis (O.F. Müller, 1776) Rundstacheliger Seeigel Rare
Styela canopus (Savigny, 1816) Rare
Styela clava Herdman, 1881 Not evaluated
Styela coriacea (Alder & Hancock, 1848) Threatened to an unkown extent
Stylaria lacustris (L., 1767) Data deficient
Stylodrilus heringianus Claparède, 1862 Data deficient
Suberites ficus (Johnston, 1842) Korkschwamm Rare
Sycon ciliatum (Fabricius, 1780) Data deficient
Syllides articulocirratus Gillandt, 1979 Rare
Syllides benedicti Banse, 1971 Data deficient
Syllides longocirratus (Ørsted, 1845) Data deficient
Syllidia armata Quatrefages, 1866 Data deficient
Syllis armillaris (O.F. Müller, 1776) Data deficient
Syllis gracilis Grube, 1840 Rare
Syllis hyalina Grube, 1863  Rare
Syllis prolifera Krohn, 1852 Extinct in Germany
Synchelidium haplocheles (Grube, 1864) Near threatened
Synchelidium maculatum Stebbing, 1906 Data deficient
Synchelidium tenuimanum Norman, 1895 Data deficient
Synoicum pulmonaria (Ellis & Solander, 1786) Extinct in Germany
T
Talitrus saltator (Montagu, 1808) Strandfloh, Sandhüpfer Endangered
Talochlamys pusio (L., 1758) Extinct in Germany
Tanganella muelleri Kraepelin, 1887 Data deficient
Tapes rhomboides (Pennant, 1777) Least concern
Tectura virginea (O.F. Müller, 1776) Weiße Schildkrötenschnecke Near threatened
Tegella unicornis (Fleming, 1828) Least concern
Tellimya ferruginosa (Montagu, 1808) Längliche Linsenmuschel Least concern
Tellina donacina L., 1758 Gestreckte Tellmuschel Least concern
Tellina fabula Gmelin, 1791 Gerippte Tellmuschel Least concern
Tellina pygmaea Lovén, 1846 Zwerg-Tellmuschel Data deficient
Tellina tenuis da Costa, 1778 Platte Tellmuschel Near threatened
Tenellia adspersa (Nordmann, 1845) Lagunen-Nacktschnecke Threatened to an unkown extent
Terebellides stroemi M. Sars, 1835 Least concern
Teredo navalis L., 1758 Pfahlwurm Not evaluated
Tergipes tergipes (Forskål, 1775) Tergipes Data deficient
Testudinalia testudinalis (O.F. Müller, 1776) Echte Schildkrötenschnecke Least concern
Thalassodrilus prostatus (Knöllner, 1935) Near threatened
Tharyx multibranchiis (Grube, 1863) Rare
Thecocodium quadratum (Werner, 1965) Data deficient
Thelepus cincinnatus (Fabricius, 1780) Data deficient
Themisto gaudichaudii Guérin-Méneville, 1825 Data deficient
Thia scutellata (Fabricius, 1793) Data deficient
Thracia convexa (W. Wood, 1815) Aufgeblasene Spatelmuschel Rare
Thracia papyracea (Poli, 1791) Stumpfe Spatelmuschel Least concern
Thracia pubescens (Pulteney, 1799) Lange Spatelmuschel Rare
Thracia villosiuscula (MacGillivray, 1827) Granulierte Spatelmuschel Least concern
Thyasira flexuosa (Montagu, 1803) Gewöhnliche Faltenmuschel Least concern
Thyasira striata (Sturany, 1896) Extinct in Germany
Thyone fusus (O.F. Müller, 1776) Spitze Seegurke Data deficient
Thyonidium drummondii (Thompson, 1840) Spindel-Seegurke Data deficient
Timoclea ovata (Pennant, 1777) Ovale Teppichmuschel Threatened to an unkown extent
Tmetonyx cicada (Fabricius, 1780) Data deficient
Tmetonyx similis (Sars, 1891) Data deficient
Tomopteris helgolandica (Greeff, 1879) Not evaluated
Tomopteris septentrionalis Steenstrup, 1849 Not evaluated
Tornus subcarinatus (Montagu, 1803) Gekielte Tornus Data deficient
Travisia forbesii Johnston, 1840 Threatened to an unkown extent
Trichobranchus glacialis Malmgren, 1866 Data deficient
Trichobranchus roseus (Malm, 1874) Least concern
Trichydra pudica Wright, 1858 Data deficient
Triticella flava Dalyell, 1848 Least concern
Tritonia hombergii Cuvier, 1803 Große Tritonia Least concern
Tritonia plebeia Johnston, 1828 Europäische Nacktschnecke Least concern
Trivia monacha (da Costa, 1778) Gefleckte Scheinkauri Threatened to an unkown extent
Trochochaeta multisetosa (Ørsted, 1844) Data deficient
Trypetesa lampas (Hancock, 1849) Data deficient
Tryphosella horingi (Boeck, 1871) Rare
Tryphosella sarsi Bonnier, 1893 Rare
Tryphosites longipes (Bate & Westwood, 1861) Least concern
Tubifex nerthus Michaelsen, 1908 Near threatened
Tubifex tubifex (O.F. Müller, 1774) Data deficient
Tubificoides amplivasatus (Erséus, 1975) Data deficient
Tubificoides benedii (d'Udekem, 1855) Least concern
Tubificoides heterochaetus (Michaelsen, 1926) Near threatened
Tubificoides pseudogaster (Dahl, 1960) Threatened to an unkown extent
Tubularia indivisa L., 1758 Data deficient
Tubulipora liliacea (Pallas, 1766) Rare
Turbonilla acuta (Donovan, 1804) Spitze Pyramidenschnecke Least concern
Turbonilla lactea (L., 1758) Milchweiße Pyramidenschnecke Rare
Turritella communis Risso, 1826 Gemeine Turmschnecke Threatened to an unkown extent
Turritella turbona Monterosato, 1877  Extinct in Germany
U
Uncinais uncinata (Ørsted, 1842) Data deficient
Unciola crenatipalma (Bate, 1862) Data deficient
Unciola planipes Norman, 1867 Near threatened
Upogebia deltaura (Leach, 1815) Threatened to an unkown extent
Upogebia pusilla (Petagna, 1792) Threatened to an unkown extent
Upogebia stellata (Montagu, 1808) Endangered
Urnatella gracilis Leidy, 1851 Data deficient
Urothoe elegans (Bate, 1857) Data deficient
Urothoe marina (Bate, 1857) Data deficient
Urothoe poseidonis Reibisch, 1905 Least concern
Urticina eques (Gosse, 1858) Vulnerable
Urticina felina (L., 1761) Dickhörnige Seerose Threatened to an unkown extent
V
Vaunthompsonia cristata Bate, 1858 Least concern
Vejdovskyella intermedia (Bretscher, 1896) Data deficient
Velutina velutina (O.F. Müller, 1776) Samtschnecke Data deficient
Venerupis senegalensis (Gmelin, 1791) Teppichmuschel Threatened to an unkown extent
Venus casina L., 1758 Least concern
Verruca stroemia (O.F. Müller, 1776) Least concern
Victorella pavida Saville Kent, 1870 Data deficient
Virgularia mirabilis (Müller, 1776) Rare
Vitreolina philippi (de Rayneval & Ponzi, 1854) Rare
W
Walkeria uva (L., 1758) Least concern
Websterinereis glauca (Claparède, 1870) Least concern
Westwoodilla caecula (Bate, 1857) Data deficient
Z
Zeppelina monostyla (Zeppelin, 1883) Data deficient
Zirfaea crispata (L., 1758) Rauhe Bohrmuschel Data deficient