sea otter

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A large marine otter (Enhydra lutris) of northern Pacific coastal waters, formerly hunted for its soft, dark brown fur.

from The Century Dictionary.

• noun A marine otter, Enhydris marina, belonging to the family Mustelidæ and subfamily Enhydrinæ: distinguished from land-otter or river-otter. It inhabits the North Pacific; its fur is of great value, and its chase is an important industry. See cut under Enhydris.

from the GNU version of the Collaborative International Dictionary of English.

• (Zoöl.) An aquatic carnivore (Enhydris lutris syn. Enhydris marina) found in the North Pacific Ocean. Its fur is highly valued, especially by the Chinese. It is allied to the common otter, but is larger, with feet more decidedly webbed.
• (Bot.) a gigantic kelp of the Pacific Ocean (Nereocystis Lutkeana). See Nereocystis.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A marine mammal native to the northern Pacific Ocean, scientific name Enhydra lutris

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun large marine otter of northern Pacific coasts having very thick dark brown fur