The Elephant Seals (genus Mirounga) are true seals.
| Carnivorans (Carnivora) | ||
| Otters (Lutrinae) | Sea otter | Marine otter | |
| Walruses (Odobeniidae) | Walrus | |
| Eared seals (Otariidae) | Antarctic fur seal | Guadalupe fur seal | Juan Fernandez fur seal | Galapagos fur seal | South African fur seal | Australian fur seal | New Zealand fur seal | Subantarctic fur seal | South American fur seal | |