Native to the northern Pacific Ocean from Russia to southern
California, this charismatic critter was seriously overhunted for its
fur – almost to extinction. It has been protected by international law
since 1911 and its population is starting to rebound, but it is still
considered endangered. Now 90% of sea otters live off the coast of
Alaska. Sea otters can sometimes be found in large groups of either males or females, known as rafts.
The sea otter can spend its entire life in the ocean, including sleeping anchored to kelp beds
to keep from drifting away. Because it spends so much time in cold
water and has no insulating fat, it relies on its fur, which is the
densest of any mammal, to stay warm. It blows bubbles of air into this coat, with
100,000 hairs per square centimeter, to keep water from penetrating to its skin.
The pictures you’ve seen are probably of sea otters floating at the
surface, but they are highly adapted to life in the water. Sea otters
have a large tail to steer and large hind feet that act as flippers. Sea
otters can swim as fast as 9 kilometers per hour and stay underwater
for almost six minutes while diving.
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