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The sea otter population is thought to have once been 150,000 to 300,000, [24] stretching in an arc across the North Pacific from northern Japan to the central Baja California Peninsula in Mexico. The fur trade that began in the 1740s reduced the sea otter's numbers to an estimated 1,000 to 2,000 members in 13 colonies.
The sea otter was once abundant in a wide arc across the North Pacific ocean, from northern Japan to Alaska to Mexico. By 1911, hunting for the animal's luxurious fur had reduced the sea otter population to fewer than 2000 individuals in the most remote and inaccessible parts of its range. The IUCN lists the sea otter as an endangered species.
Population sizes are largely unknown, though two species, the sea mink and Japanese otter, were hunted to extinction in 1894 and 1979, respectively, and several other species are endangered. Some species have been domesticated, e.g. the ferret and some populations of the South American tayra .
Southern sea otters, whose population dwindled to about 50 in 1938, are managed by the Fish and Wildlife Service. They are listed as threatened under the Endangered Species Act and are protected ...
Most have sharp claws on their feet and all except the sea otter have long, muscular tails. The 13 species range in adult size from 0.6 to 1.8 m (2.0 to 5.9 ft) in length and 1 to 45 kg (2.2 to 99.2 lb) in weight. The Asian small-clawed otter is the smallest otter species and the giant otter and sea otter are the largest.
At Elkhorn Slough National Estuarine Research Reserve, a newly-reinvigorated population of native southern sea otters has eaten so many invasive European green crabs that researchers say the ...
LONG BEACH, California (Reuters) - Every year, around 10 to 15 sea otter pups are found stranded off the California coast, often due to storms that separate mother and offspring.
In 1911, when sea otters were so scarce that hunting was no longer profitable, they were protected under the international Fur Seal Treaty, and after further conservation measures the sea otter population increased from 2,000 to between 110,000 and 160,000 from 1911 to the mid-1970s. Today, most of the species' original habitat in Alaska has ...