Acanthodorididae P. Fischer, 1883 (status source)
Acanthomira bulgakovi Martynov & Korshunova, 2025 (original description)
Acanthomiridae Martynov & Korshunova, 2025 (original description)
Adalaria Bergh, 1878 (status source)
Adalaria albopapillosa (Dall, 1871) (status source)
Adalaria proxima (Alder & Hancock, 1854) (status source)
Adalaria virescens Bergh, 1880 accepted as Adalaria albopapillosa (Dall, 1871) (source of synonymy)
Aenigmastyletus Martynov, 1998 (status source)
Amphorina andra Korshunova, Malmberg, Prkić, Petani, Fletcher, Lundin & Martynov, 2020 (status source)
Amphorina viriola Korshunova, Malmberg, Prkić, Petani, Fletcher, Lundin & Martynov, 2020 (status source)
Arctadalaria Roginskaya, 1971 (status source)
Arctadalaria boussoleana (Ekimova, Grishina & Nikitenko, 2024) (new combination reference)
Arctadalaria septentrionalis Roginskaya, 1971 accepted as Arctadalaria tschuktschica (A. Krause, 1885) (source of synonymy)
Arctadalaria sergeii (Martynov & Korshunova, 2022) (new combination reference)
Arctadalaria slavi (Martynov, Korshunova, N. Sanamyan & K. Sanamyan, 2009) (new combination reference)
Arctadalaria tschuktschica (A. Krause, 1885) (basis of record)
Capellinia prietoi (Llera & Ortea, 1981) (new combination reference)
Capellinia steinbecki (Behrens, 1987) (new combination reference)
Corruptobranchus Martynov & Korshunova, 2025 (original description)
Corruptobranchus malakhovi (Ekimova, Mikhlina, Vorobyeva, Antokhina, Tambovtseva & Shepetov, 2021) (basis of record)
Corruptobranchus odhneri (Derjugin & Gurjanova, 1926) (basis of record)
Corruptobranchus sanjuanensis (Roller, 1972) (basis of record)
Cuthonellidae M. C. Miller, 1977 (additional source)
Dunga nodulosa Eliot, 1902 (status source)
Eubranchidae Odhner, 1934 (additional source)
Eubranchopsis Baba, 1949 (status source)
Eubranchulus Martynov & Korshunova, 2025 (original description)
Eubranchulus durrelli Martynov & Korshunova, 2025 (original description)
Eubranchulus olivaceus (O'Donoghue, 1922) (basis of record)
Fiocuthona Martynov, 1992 (status source)
Fiocuthona concinna (Alder & Hancock, 1843) (basis of record)
Fiocuthona concinna bellatula (Korshunova, N. P. Sanamyan, K. E. Sanamyan, Bakken, Lundin, Fletcher & Martynov, 2020) (basis of record)
Fiocuthona concinna concinna (Alder & Hancock, 1843) (basis of record)
Galvinella adarensis (Odhner, 1934) (new combination reference)
Karavellia Martynov & Korshunova, 2025 (original description)
Karavellia krapivini Martynov & Korshunova, 2025 (original description)
Leostyletus Martynov, 1998 (status source)
Longibranchus Martynov & Korshunova, 2025 (original description)
Longibranchus putnami (Fernández-Simón & Moles, 2023) (new combination reference)
Margina Martynov & Korshunova, 2025 (original description)
Margina cocoachroma (G. C. Williams & Gosliner, 1979) (new combination reference)
Mgueolia Korshunova, Fletcher & Martynov, 2025 (original description)
Mgueolia almamater Korshunova, Fletcher & Martynov, 2025 (original description)
Nella Martynov & Korshunova, 2025 (original description)
Nella ainu (Korshunova, N. P. Sanamyan, K. E. Sanamyan, Bakken, Lundin, Fletcher & Martynov, 2020) (new combination reference)
Nella anastasia (Ekimova, Grishina & Nikitenko, 2024) (new combination reference)
Nella benedykti (Korshunova, N. P. Sanamyan, K. E. Sanamyan, Bakken, Lundin, Fletcher & Martynov, 2020) (new combination reference)
Nella denbei (Korshunova, N. P. Sanamyan, K. E. Sanamyan, Bakken, Lundin, Fletcher & Martynov, 2020) (new combination reference)
Nella georgstelleri (Korshunova, N. P. Sanamyan, K. E. Sanamyan, Bakken, Lundin, Fletcher & Martynov, 2020) (new combination reference)
Nella hiemalis (Roginskaya, 1987) (new combination reference)
Nella orientosiberica (Korshunova, N. P. Sanamyan, K. E. Sanamyan, Bakken, Lundin, Fletcher & Martynov, 2020) (new combination reference)
Nella osyoro (Baba, 1940) (new combination reference)
Nella rgo (Korshunova & Martynov, 2022) (new combination reference)
Nella soboli (Martynov, 1992) (new combination reference)
Nella yermolyevae Martynov & Korshunova, 2025 (original description)
Neptularia Martynov & Korshunova, 2025 (original description)
Neptularia neptuni (Martynov & Korshunova, 2022) (new combination reference)
Nihonbranchus Martynov & Korshunova, 2025 (original description)
Nihonbranchus horii (Baba, 1960) (new combination reference)
Nudibranchus Martynov, 1998 (additional source)
Nudibranchus scintillans (Grishina, Schepetov & Ekimova, 2022) (new combination reference)
Onchidorididae J. E. Gray, 1827 (status source)
Onchidoris Blainville, 1816 (additional source)
Onchidoris hystricina (Bergh, 1878) (status source)
Onchidoris macropompa Martynov, Korshunova, N. Sanamyan & K. Sanamyan, 2009 (status source)
Onchidoris pacifica (Bergh, 1880) (new combination reference)
Onchidoris pavli Martynov & Korshunova, 2022 (status source)
Onchimira bogdanovi Martynov & Korshunova, 2025 (original description)
Onchimira haeckeli Martynov & Korshunova, 2025 (original description)
Onchimira kozhevnikovi Martynov & Korshunova, 2025 (original description)
Onchimira pertsovi Martynov & Korshunova, 2025 (original description)
Onchimiridae Martynov & Korshunova, 2025 (original description)
Penistella Martynov & Korshunova, 2025 (original description)
Penistella elenae (Martynov, 2000) (new combination reference)
Produnga Martynov, 1998 (status source)
Spectacula Martynov & Korshunova, 2025 (original description)
Spectacula olgae (Martynov, Korshunova, N. Sanamyan & K. Sanamyan, 2009) (new combination reference)
Velona Martynov & Korshunova, 2025 (original description)
Velona evincta (Millen, 2006) (new combination reference)
Victima Martynov & Korshunova, 2025 (original description)
Victima vasentsovichi (Korshunova, N. P. Sanamyan, K. E. Sanamyan, Bakken, Lundin, Fletcher & Martynov, 2020) (new combination reference)

Alaskan Exclusive Economic Zone for Adalaria virescens Bergh, 1880 
Alaskan Exclusive Economic Zone for Alderia albopapillosa Dall, 1871 
British Columbia for Adalaria evincta Millen, 2006 
British Isles for Eolis concinna Alder & Hancock, 1843 
California for Cuthona cocoachroma G. C. Williams & Gosliner, 1979 
Kamchatka Shelf and Coast for Adalaria olgae Martynov, Korshunova, N. Sanamyan & K. Sanamyan, 2009 
Kurile Islands for Acanthomira bulgakovi Martynov & Korshunova, 2025 
Kurile Islands for Eubranchulus durrelli Martynov & Korshunova, 2025 
Kurile Islands for Karavellia krapivini Martynov & Korshunova, 2025 
Kurile Islands for Mgueolia almamater Korshunova, Fletcher & Martynov, 2025 
Kurile Islands for Nella yermolyevae Martynov & Korshunova, 2025 
Kurile Islands for Onchimira bogdanovi Martynov & Korshunova, 2025 
Kurile Islands for Onchimira haeckeli Martynov & Korshunova, 2025 
Kurile Islands for Onchimira kozhevnikovi Martynov & Korshunova, 2025 
Sagami Bay for Eubranchus horii Baba, 1960 
Sakhalin for Onchimira pertsovi Martynov & Korshunova, 2025 

 Etymology

 for Eubranchus horii Baba, 1960

Named after Kenzo Hori, "a gentleman greatly interested in the extension of the nudibranch survey in Toyama Bay and ... [details]

 Etymology

 for Onchimira bogdanovi Martynov & Korshunova, 2025

Named after Anatoli Bogdanov, director of Zoological Museum of Moscow State University. [details]

 Etymology

 for Onchimira haeckeli Martynov & Korshunova, 2025

Named after Ernst Haeckel. [details]