| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Onchidoris albonigra (Pruvot-Fol, 1951) |
Mediterranean Sea | ||
| Onchidoris aspera (Alder & Hancock, 1842) |
Northern Atlantic | ||
| Onchidoris aureopuncta (Verrill, 1901) |
Western Atlantic | 1 | |
| Onchidoris bilamellata (Linnaeus, 1761) |
Barnacle-eating onchidoris | Northeast Atlantic, Eastern Pacific, and the Arctic | 3.8 |
| Onchidoris depressa (Alder & Hancock, 1842) |
Western Central Pacific, Northeast Atlantic and the Mediterranean Sea | ||
| Onchidoris diademata (Gould, 1870) |
Western Atlantic | 3.8 | |
| Onchidoris expectata Martynov & Korshunova, 2017 |
Northwest Pacific | ||
| Onchidoris grisea (Gould, 1870) |
Western Atlantic | 1.2 | |
| Onchidoris hystricina (Bergh, 1878) |
Eastern Central Pacific | ||
| Onchidoris inconspicua (Alder & Hancock, 1851) |
Northeast Atlantic | ||
| Onchidoris lactea (Verrill, 1900) |
Western Atlantic | 1.2 | |
| Onchidoris maugeansis (Burn, 1958) |
Maugean onchidoris | Eastern Indian Ocean | |
| Onchidoris miniata (Verrill, 1901) |
Western Atlantic | 1 | |
| Onchidoris muricata (Müller, 1776) |
Fuzzy onchidoris | Eastern Pacific, Atlantic Ocean and the Arctic | 1.4 |
| Onchidoris neapolitana (delle Chiaje, 1841) |
Mediterranean Sea | ||
| Onchidoris oblonga (Alder & Hancock, 1845) |
Northeast Atlantic | ||
| Onchidoris olivacea (Verrill, 1900) |
Western Atlantic | 1 | |
| Onchidoris quadrimaculata (Verrill, 1900) |
Western Atlantic | 1.2 | |
| Onchidoris sparsa (Alder & Hancock, 1846) |
Northeast Atlantic and the Mediterranean Sea | ||
| Onchidoris tenella (Gould, 1870) |
Western Atlantic | 1.2 |