Rekke Mollusca Cuvier, 1797 (Bløtdyr)
Klasse Gastropoda Cuvier, 1795 (Snegler)
Underklasse Heterobranchia Burmeister, 1837 (Flergjellesnegler)
Infraklasse Euthyneura Spengel, 1881
Subterklasse Ringipleura Kano et al., 2016
Overorden Nudipleura Wägele & Willan, 2000
Orden Doridida (Anthobranchia) Pelseneer, 1894
Underorden Doridoidei
Overfamilie Chromodoridoidea Bergh, 1891
Familie Cadlinidae Bergh, 1891
Aldisa zetlandica (Alder & Hancock, 1854) – LES MER
Cadlina laevis (Linné, 1767)
Cadlina glabra (Friele & Hansen, 1876)
Overfamilie Doridoidea Rafinesque, 1815
Familie Discodorididae Bergh, 1891
Geitodoris planata (Alder & Hancock, 1846) – LES MER
Jorunna artsdatabankia Neuhaus, Rauch, Bakken, Picton, Pola & Malaquias, 2021 – LES MER
Jorunna tomentosa (Cuvier, 1804)
Rostanga rubra (Risso, 1818)
Rostanga setidens (Boreodoris setidens) (Odhner, 1939)
Familie Dorididae Rafinesque, 1815
Archidoris pseudoargus (Rapp, 1827)
Doris nobilis Odhner, 1907
Overfamilie Onchidoridoidea Gray, 1827
Familie Acanthodorididae P. Fischer, 1883
Acanthodoris pilosa (Abildgaard in Müller, 1789)
Familie Oncidorididae J. E. Gray, 1827
Adalaria loveni(Alder & Hancock, 1862) – LES MER
Adalaria proxima (Alder & Hancock, 1854) – LES MER
Atalodoris inconspicua (Onchidoris inconspicua) (Alder & Hancock, 1851) – LES MER
Atalodoris oblonga (Onchidoris oblonga) (Alder & Hancock, 1845) – LES MER
Atalodoris pusilla (Onchidoris pusilla) (Alder & Hancock, 1845) – LES MER
Atalodoris sparsa (Onchidoris sparsa) (Alder & Hancock, 1846) – LES MER
Idaliadoris depressa (Onchidoris depressa) (Alder & Hancock, 1842) – LES MER
Onchidoris bilamellata (Linnaeus, 1767)
Onchidoris muricata (O. F. Müller, 1776) – LES MER
Familie Aegiridae P. Fischer, 1883
Aegires incisus (Sars G. O., 1872)
Aegires punctilucens (d’Orbigny, 1837)
Familie Akiodorididae Millen & Martynov, 2005
Doridunculus echinulatus Sars G.O., 1878
Echinocorambe brattegardi Valdés & Bouchet, 1998
Familie Calycidorididae Roginskaya, 1972
Calycidoris guentheri Abraham, 1876
Diaphorodoris luteocincta (Onchidoris luteocincta) (M. Sars, 1870) – LES MER
Familie Goniodorididae H. Adams & A. Adams, 1854
Ancula gibbosa (Risso, 1818)
Goniodoris nodosa (Okenia nodosa) (Montagu, 1808)
Lophodoris danielsseni (Friele & Hansen, 1876) – LES MER
Okenia aspersa (Alder & Hancock, 1854)
Okenia leachii (Alder & Hancock, 1854)
Okenia pulchella (Okenia aspersa) (Alder & Hancock, 1854)
Okenia elegans (Leuckart, 1828)
Pelagella castanea (Goniodoris castanea) Alder & Hancock, 1845 – LES MER
Overfamilie Polyceroidea Alder & Hancock, 1845
Familie Polyceridae Alder & Hancock, 1845
Colga villosa (Odhner, 1907) – LES MER
Crimora papillata Alder & Hancock, 1862
Limacia clavigera (O. F. Müller, 1776) – LES MER
Palio dubia (M. Sars, 1829)
Palio nothus (Johnston, 1838)
Polycera capitata (Polycera norvegica) (Alder & Hancock, 1854) – LES MER
Polycera faeroensis Lemche, 1929 – LES MER
Polycera kernowensis Korshunova, Driessen, Picton & Martynov, 2021 – LES MER
Polycera quadrilineata (O. F. Müller, 1776) – LES MER
Orden Nudibranchia Cuvier in Blainville, 1814 (Cladobranchia)
Underorden Arminacea (Arminina) Odhner, 1934
Overamilie Arminoidea Iredale & O’Donoghue, 1923
Familie Arminidae Iredale & O’Donoghue, 1923
Armina loveni (Bergh, 1860) – LES MER
Overfamilie Heterodoridoidea A. E. Verrill & Emerton, 1882
Familie Doridoxidae Bergh, 1899
Doridoxa walteri Krause, 1892 – LES MER
Familie Heterodorididae A. E. Verrill & Emerton, 1882
Heterodoris robusta Verrill & Emerton, 1882
Underorden Janolacea (Janolina) Minichev & Starobogatov, 1979
Familie Goniaeolididae Odhner, 1907 (mangler overfamilie)
Goniaeolis typica Sars M., 1861
Overfamilie Proctonotoidea J. E. Gray, 1853
Familie Janolidae Pruvot-Fol, 1933
Antiopella cristata (delle Chiaje, 1841)
Janolus hyalinus (Alder & Hancock, 1854) – LES MER
Familie Proctonotidae J. E. Gray, 1853
Proctonotus mucroniferus (Alder & Hancock, 1854) – LES MER
Underorden incertia sedis
Familie Heroidae J. E. Gray, 1857
Hero formosa (Lovén, 1844) – LES MER
Underorden Tritoniacea (Tritonina) Lamarck, 1809
Overfamilie Tritonioidea Lamarck, 1809
Familie Tritoniidae Lamarck, 1809
Candiella lineata (Tritonia lineata) Alder & Hancock, 1848 – LES MER
Candiella plebeia (Tritonia plebeia) Johnston, 1828 – LES MER
Tritonia griegi Odhner, 1922 – LES MER
Tritonia hombergi Cuvier, 1803 – LES MER
Underorden Dendronotacea (Dendronotina) Odhner, 1934
Overfamilie Dendronotoidea Allman, 1845
Familie Dendronotidae Allman, 1845
Dendronotus arcticus gartensis Korshunova, Grøtan, K. B. Johnson, Bakken, Picton & Martynov, 2023 – LES MER
Dendronotus elegans A. E. Verrill
Dendronotus europaeus Korshunova, Martynov, Bakken & Picton, 2017 – LES MER
Dendronotus frondosus (Ascanius, 1770) – LES MER
Dendronotus kalikal Ekimova, Korshunova, Schepetov, Neretina, Sanamyan & Martynov, 2015
Dendronotus keatleyae Korshunova, Grøtan, K. B. Johnson, Bakken, Picton & Martynov, 2023 – LES MER
Dendronotus lacteus (Thompson, 1840) – LES MER
Dendronotus robustus E. A. Verrill, 1880
Dendronotus velifer G. O. Sars, 1878
Dendronotus yrjagul Korshunova, Bakken, Grøtan, Johnson, Lundin & Martynov, 2020 – LES MER
Familie Dotidae J. E. Gray, 1853
Doto coronata (Gmelin, 1791)
Doto crassicornis (Sars M., 1870)
Doto cuspidata Alder & Hancock, 1862
Doto fragilis (Forbes, 1838)
Doto hydrallmania Morrow, Thorpe & Picton, 1992
Doto hystrix Picton & Brown, 1981
Doto koenneckeri Lemche, 1976
Doto maculata Montagu, 1804
Doto milbayana (Doto dunnei) Lemche, 1976 – LES MER
Doto pinnatifida (Montagu, 1804)
Doto tuberculata Lemche, 1976
Familie Hancockiidae MacFarland, 1923
Hancockia uncinata (Hesse, 1872) – LES MER
Familie Lomanotidae Bergh, 1890
Lomanotus genei Vérany, 1846
Lomanotus marmoratus (Alder & Hancock, 1845)
Underorden Aeolidacea (Aeolidina) Odhner, 1934
Overfamilie Embletonioidea Pruvot-Fol, 1954
Familie Embletoniidae Pruvot-Fol, 1954
Embletonia pulchra Alder & Hancock, 1844 – LES MER
Overfamilie Flabellinoidea Bergh, 1889
Familie Coryphellidae Bergh, 1889
Borealea nobilis (Coryphella nobilis) A. E. Verrill, 1880
Coryphella verrucosa (Coryphella rufibranchialis) (M. Sars, 1829) – LES MER
Gulenia borealis (Coryphella borealis) (Odhner, 1922)
Gulenia monicae Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl & Picton, 2017 – LES MER
Gulenia orjani Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl & Picton, 2017 – LES MER
Fjordia browni (Coryphella browni) Picton, 1980
Fjordia chriskaugei Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl & Picton, 2017 – LES MER
Fjordia lineata (Coryphella lineata) (Lovén, 1846)
Microchlamylla gracilis (Coryphella gracilis) (Alder & Hancock, 1844) – LES MER
Familie Paracoryphellidae Miller, 1971
Ziminella salmonacea (Coryphella salmonacea) (Couthouy, 1838)
Familie Flabellinidae Bergh, 1889
Carronella enne Korshunova, T.; Martynov, A.; Bakken, T.; Evertsen, J.; Fletcher, K.; Mudianta, W.; Saito, H.; Lundin, K.; Schrödl, M.; Picton, B., 2017
Carronella pellucida (Coryphella pellucida) (Alder & Hancock, 1843)
Edmundsella pedata (Coryphella pedata) (Montagu, 1815)
Overfamilie Fionidae Gray, 1857
Familie Calmidae Iredale & O’Donoghue, 1923
Calma glaucoides Alder & Hancock, 1854 – LES MER
Familie Cuthonellidae M. C. Miller, 1977
Cuthonella abyssicola Bergh, 1884
Fiocuthiona concinna (Cuthona concinna) (Alder & Hancock, 1843)
Familie Cuthonidae Odhner, 1934
Bohuslania matsmichaeli Korshunova, Lundin, Malmberg, Picton & Martynov, 2018 – LES MER
Cuthona nana (Alder & Hancock, 1842)
Cuthona norvegica (Odhner, 1929)
Cuthona pallida (Amphorina pallida) (Alder & Hancock, 1842)
Familie Eubranchidae Odhner, 1934
Amphorina andra Korshunova, Malmberg, Prkic, Petani, Fletcher, Lundin, Martynov, 2020
Amphorina farrani (Eubranchus farrani) (Alder & Hancock, 1844)
Amphorina linensis (Eubranchus linensis) Garcia-Gomez, Cervera & Garcia, 1990
Amphorina viriola Korshunova, Malmberg, Prkic, Petani, Fletcher, Lundin, Martynov, 2020
Capellinia doriae Trinchese, 1874
Capellinia fustifera (Tergipes fustifer) Lovén, 1846 – LES MER
Eubranchus tricolor Forbes, 1838
Eubranchulus rupium (Eubranchus rupium) (Møller, 1842) – LES MER
Capellinia vittata (Eubranchus vittatus) (Alder & Hancock, 1842)
Nudibranchus exiguus (Eubranchus exiguus) (Alder & Hancock, 1848) – LES MER
Nudibranchus scintillans (Eubranchus scintillans) Grishina, Schepetov & Ekimova, 2022 – LES MER
Familie Tergipedidae Bergh, 1889
Tergipes tergipes (Forskål in Niebuhr, 1775)
Familie Trinchesidae F. Nordsieck, 1972
Catriona aurantia (Cuthona gymnota) (Couthouy, 1838) – LES MER
Diaphoreolis viridis (Cuthona viridis) (Forbes, 1840)
Diaphoreolis stipata Alder & Hancock, 1843 – LES MER
Rubramoena amoena (Cuthona amoena) (Alder & Hancock, 1845)
Rubramoena rubescens (Cuthona rubescens) Picton & Brown, 1978
Tenellia adspersa (Nordmann, 1845)
Tenellia foliata (Trinchesia foliata) (Forbes & Goodsir, 1839)
Tenellia ninel (Zelentia ninel) Korshunova, Martynov & Picton, 2017 – LES MER
Tenellia pustulata (Zelentia pustulata) (Alder & Hancock, 1854)
Trinchesia caerulea (Cuthona caerulea) (Montagu, 1804)
Trinchesia cuanensis Korshunova, Picton, Furfaro, Mariottini, Pontes, Prkic, Fletcher, Malmberg, Lundin & Martynov, 2019
Familie Xenocratenidae Martynov, Lundin, Picton, Fletcher, Malmberg & Korshunova, 2020
Xenocratena suecica Odhner, 1940
Overfamilie Aeolidoidea J. E. Gray, 1827
Familie Aeolidiidae J. E. Gray, 1827
Aeolidia filomena Kienberger, Carmona, Pola, Padula, Gosliner & Cervera, 2016
Aeolidia papillosa (Linné, 1761)
Aeolidiella glauca (Alder & Hancock, 1845)
Berghia norvegica Odhner, 1939
Zeusia hyperborea Korshunova, Zimina & Martynov, 2017
Familie Facelinidae (Favorinidae) Bergh, 1889
Facelina bostoniensis (Couthouy, 1838)
Facelina dubia (Pruvot-Fol, 1948)
Facelina auriculata (Facelina coronata) (Müller, 1776)
Favorinus blianus Lemche & Thompson, 1974 – LES MER
Favorinus branchialis (Rathke, 1806) – LES MER
Orden Pleurobranchida
Overfamilie Pleurobranchoidea Gray, 1827 (Sidegjellesnegler)
Familie Pleurobranchidae Gray, 1827
Berthella plúmula (Bulla plúmula) (Montagu, 1803)
Pleurobranchus membranaceus (Lamellaria membranácea) (Montagu, 1816)