polar bear or bear ice or in the scientific name Ursus maritimus is a large mammal in the family clan rules Ursida biology. He included Circumpolar species contained in the most northern continents around the earth, which Arctic continent and includes most carnivorous bear in the bear family lainny. Polar bears are sometimes also classified as marine mammals.
Male polar bears weigh between 400-600 pounds and can sometimes reach more than 800 kg with a height of more than 2.5 meters. Meanwhile, a female polar bear weight is only half of the male bear weighing between 200-300 kg and about 2 meters high. Polar bears have a very keen sense of smell. they can smell the dead whale or seal from a distance of 20 miles.
Polar bears are powerful swimmers can swim as far as 60 miles without stopping. They used to swim front leg and rear leg as a rudder. Oil glands in the skin can lubricate their feathers well be water resistant and made her body remained dry during the swim.
In the summer in the Arctic, especially in the month of May-June, fur - a thick bear fur began to fall to keep the body temperature remains stable.
