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