| Scientific Name | Author | English Name |
|---|---|---|
| Marianina rosea | (Pruvot-Fol, 1930) | Rosy marianina |
| Marionia abrahamorum | Silva, Herrero-Barrencua, Pola & Cervera, 2019 | |
| Marionia arborescens | Bergh, 1890 | |
| Marionia blainvillea | (Risso, 1818) | |
| Marionia chloanthes | Bergh, 1902 | |
| Marionia cucullata | (Couthouy, 1852) | |
| Marionia echinomuriceae | Jensen, 1994 | |
| Marionia elongoreticulata | Smith & Gosliner, 2005 | |
| Marionia elongoviridis | Smith & Gosliner, 2005 | |
| Marionia granularis | Odhner, 1936 | |
| Marionia rubra | (Ruppell & Leuckart, 1831) | |
| Marionia tedi | Marcus, 1983 | |
| Marionia viridescens | Eliot, 1904 | |
| Marioniopsis cyanobranchiata | Odhner, 1936 | |
| Marioniopsis levis | (Eliot, 1904) | |
| Marioniopsis platyctenea | Willan, 1988 | |
| Paratritonia lutea | Baba, 1949 | |
| Tochuina tetraquetra | (Pallas, 1788) | Giant orange tochui |
| Tritonia australis | (Bergh, 1898) | |
| Tritonia challengeriana | Bergh, 1884 | Faded tritonia |
| Tritonia dantarti | Ballesteros & Avila, 2006 | |
| Tritonia diomedea | Bergh, 1894 | Rosy tritonia |
| Tritonia episcopalis | Bouchet, 1977 | |
| Tritonia eriosi | Marcus, 1983 | |
| Tritonia exsulans | Bergh, 1894 | |
| Tritonia festiva | (Stearns, 1873) | Diamondback tritonia |
| Tritonia griegi | Edhner, 1922 | |
| Tritonia hombergii | Cuvier, 1802 | |
| Tritonia incerta | Bergh, 1904 | Muted tritonia |
| Tritonia iocasica | Zhang & Zhang, 2021 | |
| Tritonia lineata | Alder & Hancock, 1848 | |
| Tritonia manicata | Deshayes, 1853 | |
| Tritonia myrakeenae | Bertsch & Mozqueira, 1986 | Keen's tritonid |
| Tritonia nilsodhneri | Marcus, 1983 | Nilsodhner's tritonia |
| Tritonia odhneri | unspecified | Magnificent tritonia |
| Tritonia palmeri | (Cooper, 1862) | |
| Tritonia pickensi | Marcus & Marcus, 1967 | Picken's tritonid |
| Tritonia plebeia | Johnston, 1828 | Plebeian tritonia |
| Tritonia poirieri | (Mabille & Rochebrune, 1889) | |
| Tritonia striata | Haefelfinger, 1963 | |
| Tritonia vorax | (Odhner, 1926) | Voracious tritonia |
| Tritonicula bayeri | (Marcus & Marcus, 1967) | |
| Tritonicula hamnerorum | (Gosliner & Ghiselin, 1987) | |
| Tritonicula wellsi | (Marcus, 1961) | Sea whip slug |
| Tritoniella belli | Eliot, 1907 | |
| Tritoniella gnathodentata | Schächinger, Schrödl, Wilson & Moles, 2022 | |
| Tritoniella gnocchi | Schächinger, Schrödl, Wilson & Moles, 2022 | |
| Tritoniella heideae | Schächinger, Schrödl, Wilson & Moles, 2022 | |
| Tritoniella prinzess | Schächinger, Schrödl, Wilson & Moles, 2022 | |
| Tritoniella schoriesi | Schächinger, Schrödl, Wilson & Moles, 2022 | |
| Tritoniopsilla brucei | (Eliot, 1905) | |
| Tritoniopsis cincta | (Pruvot-Fol, 1937) | |
| Tritoniopsis elegans | (Audouin, 1826) | White tritoniopsis |
| Tritoniopsis frydis | Marcus & Marcus, 1970 |