Biology - Polar bear. Polar bears cuddling together in the Arctic snow.

Scientific name: Ursus maritimus Average weight: 400 kg–600 kg (male) 150 kg–250 kg (female) Average length: 2.4 m–2.6 m (female smaller than male) Average lifespan: 24 years (male) 28 years (female) Biology The polar bear’s Latin name, Ursus maritimus, means “sea bear.” It is the only bear considered a marine mammal, because it depends upon the marine environment for survival. It has large canine teeth and grinding surfaces on its cheek teeth.

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