| Scientific Name | Author | English Name |
|---|---|---|
| Ancula espinosai | Ortea, 2001 | |
| Ancula evelinae | Marcus, 1961 | |
| Ancula fuegiensis | Odhner, 1926 | |
| Ancula gibbosa | (Risso, 1818) | Atlantic ancula |
| Ancula lentiginosa | Farmer, 1964 | Freckled ancula |
| Ancula mapae | (Burn, 1961) | |
| Ancula pacifica | MacFarland, 1905 | Pacific ancula |
| Bermudella evelinae | (Marcus, 1957) | |
| Bermudella polycerelloides | Ortea & Bouchet, 1983 | |
| Bermudella zoobotryon | (Smallwood, 1910) | |
| Cargoa impexa | (Marcus, 1957) | |
| Goniodoris barroisi | Vayssière, 1901 | |
| Goniodoris castanea | Alder & Hancock, 1845 | |
| Goniodoris felis | Baba, 1949 | |
| Goniodoris glabra | Baba, 1937 | |
| Goniodoris joubini | Risbec, 1928 | Joubin's Goniodoris |
| Goniodoris meracula | Burn, 1958 | |
| Goniodoris mercurialis | Macnae, 1958 | |
| Goniodoris mimula | Marcus, 1955 | |
| Goniodoris nodosa | unspecified | Montagus sea slug |
| Goniodoris savignyi | Pruvot-Fol, 1933 | |
| Hopkinsia rosacea | MacFarland, 1905 | Rose nudibranch |
| Lophodoris danielsseni | (Friele & Hansen, 1876) | |
| Lophodoris scala | Marcus & Marcus, 1970 | |
| Murphydoris adusta | Paz-Sedano, Smirnoff, Candás, Gosliner & Pola, 2022 | |
| Murphydoris cobbi | Paz-Sedano, Smirnoff, Candás, Gosliner & Pola, 2022 | |
| Murphydoris maracabranchia | Paz-Sedano, Smirnoff, Candás, Gosliner & Pola, 2022 | |
| Murphydoris puncticulata | Paz-Sedano, Smirnoff, Candás, Gosliner & Pola, 2022 | |
| Murphydoris singaporensis | Sigurdsson, 1991 | |
| Okenia amoenula | (Bergh, 1907) | |
| Okenia angelensis | Lance, 1966 | Angeles okenia |
| Okenia angelica | Gosliner & Bertsch, 2004 | Angelic okenia |
| Okenia aspersa | Alder & Hancock, 1845 | |
| Okenia aurorapapillata | Paz-Sedano & Pola, 2021 | |
| Okenia barnadi | Baba, 1937 | |
| Okenia brunneomaculata | Gosliner, 2004 | |
| Okenia cochimi | Gosliner & Bertsch, 2004 | Cochimi's okenia |
| Okenia cupella | (Vogel & Schultz, 1970) | |
| Okenia elegans | (Leuckart, 1828) | |
| Okenia elisae | Paz-Sedano & Pola in Paz-Sedano, Wilson, Carmona, Gosliner & Pola, 2021 | |
| Okenia hiroi | (Baba, 1938) | Hiro's sea slug |
| Okenia hispanica | (Valdés & Ortea, 1995) | |
| Okenia japonica | Baba, 1949 | |
| Okenia kendi | Gosliner, 2004 | |
| Okenia leachii | (Alder & Hancock, 1854) | |
| Okenia mediterranea | (Von Ihering, 1886) | |
| Okenia mexicorum | Gosliner & Bertsch, 2004 | Ali & Orso's okenia |
| Okenia mija | Burn, 1967 | |
| Okenia miramarae | Ortea & Espinosa, 2000 | |
| Okenia nakamotoensis | (Hamatani, 2001) | |
| Okenia nakanoae | Paz-Sedano & Pola in Paz-Sedano, Wilson, Carmona, Gosliner & Pola, 2021 | |
| Okenia pilosa | (Bouchet & Ortea, 1983) | |
| Okenia plana | Baba, 1960 | Flat okenia |
| Okenia plebeja | (Bergh, 1902) | |
| Okenia purpureolineata | Gosliner, 2004 | |
| Okenia quadricornis | (Montagu, 1815) | Seasquirt okenia |
| Okenia sapelona | Marcus & Marcus, 1967 | Sapelo okenia |
| Okenia siderata | Paz-Sedano & Pola in Paz-Sedano, Wilson, Carmona, Gosliner & Pola, 2021 | |
| Okenia tenuifibrata | Paz-Sedano & Pola in Paz-Sedano, Wilson, Carmona, Gosliner & Pola, 2021 | |
| Okenia vancouverensis | (O'Donoghue, 1921) | Vancouver okenia |
| Trapania aurata | Rudman, 1987 | Gold-tipped trapania |
| Trapania aureopunctata | Rudman, 1987 | |
| Trapania benni | Rudman, 1987 | Benn's trapania |
| Trapania brunnea | Rudman, 1987 | Brown trapania |
| Trapania dalva | Marcus, 1972 | |
| Trapania darvelli | Rudman, 1987 | |
| Trapania fusca | (Lafont, 1874) | |
| Trapania gibbera | Gosliner & Fahey, 2008 | |
| Trapania goddardi | Hermosillo & Valdés, 2004 | Goddard's trapania |
| Trapania goslineri | Millen & Berstch, 2000 | Gosliner's trapania |
| Trapania hispalensis | Cervera & Garcia-Gomez, 1989 | |
| Trapania japonica | (Baba, 1935) | |
| Trapania kahel | Smirnoff, Donohoo & Gosliner, 2022 | |
| Trapania kamagong | Smirnoff, Donohoo & Gosliner, 2022 | |
| Trapania kanaloa | Smirnoff, Donohoo & Gosliner, 2022 | |
| Trapania lemanioides | Smirnoff, Donohoo & Gosliner, 2022 | |
| Trapania lemnalioides | Smirnoff, Donohoo & Gosliner, 2022 | |
| Trapania lineata | Haefelfinger, 1960 | Stripete tritonia |
| Trapania maculata | Haefelfinger, 1960 | |
| Trapania maringa | Marcus, 1957 | |
| Trapania miltabrancha | Gosliner & Fahey, 2008 | |
| Trapania naeva | Gosliner & Fahey, 2008 | |
| Trapania pallida | Kress, 1968 | |
| Trapania scurra | Gosliner & Fahey, 2008 | |
| Trapania stegodon | Smirnoff, Donohoo & Gosliner, 2022 | |
| Trapania tamaraw | Smirnoff, Donohoo & Gosliner, 2022 | |
| Trapania tartanella | (Von Ihering, 1886) | |
| Trapania tatsulok | Smirnoff, Donohoo & Gosliner, 2022 | |
| Trapania tigger | Smirnoff, Donohoo & Gosliner, 2022 | |
| Trapania toddi | Rudman, 1987 | |
| Trapania undulata | Smirnoff, Donohoo & Gosliner, 2022 | |
| Trapania velox | (Cockerell, 1901) | Swift trapania |
| Trapania vitta | Gosliner & Fahey, 2008 |