Thursday, December 3, 2009

Important Organism-Sea Otter


The sea otter is the largest member of the weasel family, and the only one which lives almost entirely in the water.
-Sea otters can live up to 25 years of age, the average lifespan is 10 to 12 years.
-At birth, sea otters weigh approximately 5 lbs and are 10 inches in length.
- Sea otter fur is the finest of any mammal, they have 850,000 to 1 million hairs per square inch. They rely on these hairs to keep warm in the water. If fur is soiled with oils or other foreign substances, the sea otter won't be able to keep itself insulated. Consequently, sea otters spend much of their time cleaning and grooming their fur.
- Sea otters are social, they float together in groups of less than 10 to more than 100, called rafts. Most of the time, groups are separated by sex, females and pups spend time in one group and males in another
- Sea otters live in coastal, shallow water. Their habitat consists of two areas in these waters- the ocean floor where they find their food, and the surface where they eat, groom, rest and social interactions occur.
- Sea otters eat benthic creatures such as clams, mussels, urchins, crabs, and fish. They must dive to capture their food. They eat 20-30% of their weight each day to stay insulated

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