Phylum Mollusca Linnaeus, 1758
Class Gastropoda Cuvier, 1795
Subclass Heterobranchia Burmeister, 1837
Infraclass Opistobranchia Milne-Edwards, 1848
Order Sacoglossa Ihering, 1876
Family Limapontiidae Gray, 1847
Placida babai Ev.Marcus, 1982
Placida dendritica (Alder & Hancock, 1843)
Limapontia senestra (Quatrefages, 1844)
Order Runcinacea Burn, 1963
Family Runcinidae H. Adams & A. Adams, 1854
Runcinida valentinae Chernyshev, 2006
Order Nudibranchia Cuvier, 1817
Family Cadlinidae Bergh, 1891
Cadlina laevis (Linnaeus, 1767)
Family Discodorididae Bergh, 1891
Diaulula sandiegensis (J. G. Cooper, 1863)
Rostanga alisae Martynov, 2003
Family Okadaiidae Baba, 1930
Vayssierea elegans (Baba, 1930)
Family Polyceridae Alder & Hancock, 1845
Palio dubia (M. Sars, 1829)
Polycera quadrilineata (O. F. Müller, 1776)
Family Goniodorididae H. Adams & A. Adams, 1854
Ancula gibbosa (Risso, 1818)
Goniodoris nodosa (Montagu, 1808)
Family Dorididae Rafinesque, 1815
Doris pseudoargus Rapp, 1827
Family Onchidorididae Gray, 1827
Acanthodoris pilosa (Abildgaard in Müller, 1789)
Adalaria proxima (Alder & Hancock, 1854)
Onchidoris muricata (O. F. Müller, 1776)
Onchidoris bilamellata (Linnaeus, 1767)
Family Dendronotidae Allman, 1845
Dendronotus frondosus (Ascanius, 1774)
Dendronotus kamchaticus Ekimova, Korshunova, Schepetov, Neretina, Sanamyan & Martynov, 2015
Dendronotus lacteus (W. Thompson, 1840)
Dendronotus niveus Ekimova, Korshunova, Schepetov, Neretina, Sanamyan & Martynov, 2015
Dendronotus robustus A. E. Verrill, 1870
Family Dotoidae Gray, 1853
Doto coronata (Gmelin, 1791)
Doto fragilis (Forbes, 1838)
Family Proctonotidae Gray, 1853
Janolus fuscus O’Donoghue, 1924
Family Dironidae Eliot, 1910
Dirona pellucida Volodchenko, 1941
Flabellinidae Bergh, 1889
Flabellina athadona (Bergh, 1875)
Flabellina gracilis (Alder & Hancock, 1844)
Flabellina nobilis (A. E. Verrill, 1880)
Flabellina pellucida (Alder & Hancock, 1843)
Flabellina polaris (Volodchenko, 1946)
Flabellina trophina (Bergh, 1890)
Flabellina verrucosa (M. Sars, 1829)
Family Cuthonellidae Miller, 1971
Cuthona nana (Alder & Hancock, 1842)
Cuthonella concinna (Alder & Hancock, 1843)
Cuthonella hiemalis (Roginskaya, 1987)
Cuthonella soboli Martynov, 1992
Family Eubranchidae Odhner, 1934
Eubranchus exiguus (Alder & Hancock, 1842)
Eubranchus rupium (Møller, 1842)
Eubranchus pallidus (Alder & Hancock, 1842)
Family Tergipedidae Bergh, 1889
Tergipes tergipes (Forsskål in Niebuhr, 1775)
Family Trinchesiidae F. Nordsieck, 1972
Trinchesia pustulata (Alder & Hancock, 1854)
Trinchesia viridis (Forbes, 1840)
Family Aeolididae Gray, 1827
Aeolidia papillosa (Linnaeus, 1761)