- a large marine mammal, Odobenus nosmarus, of Arctic seas, related to the seals, and having flippers, a pair of large tusks, and a tough, wrinkled skin.
- a pinniped mammal, Odobenus rosmarus, of northern seas, having a tough thick skin, upper canine teeth enlarged as tusks, and coarse whiskers and feeding mainly on shellfish: family Odobenidae
