Eumetopias
Zalophus
Otaria
Neophoca
Phocarctos A sea lion is any of several marine mammals of the family Otariidae. Sea lions are characterized by the presence of external ear pinnae or flaps, long front flippers, and the ability to walk on four flippers on land. Sea lions are generally found in coastal waters of the temperate to subpolar regions of both northern and southern hemispheres.

• SUBORDER PINNIPEDIA
• Family Otariidae
  • Subfamily Arctocephalinae: fur seals
  • Subfamily Otariinae
    • Steller's Sea Lion, Eumetopias jubatus
    • California Sea Lion, Zalophus californianus
    • South American Sea Lion, Otaria flavescens
    • Australian Sea Lion, Neophoca cinerea
    • New Zealand Sea Lion, Phocarctos hookeri
• Family Phocidae: true seals
• Family Odobenidae: Walrus