The polar bear is often regarded as a marine mammal because it spends many months of the year at sea. However, it is the only living "marine mammal" with powerful, large limbs and feet that allow them to cover miles on foot and run on land.


The polar bear is the largest living species of terrestrial predator. The only other bear of a similar size is the Kodiak bear, which is a subspecies of brown bear. Adult male polar bears weigh 350–700 kg (770–1,500 lb) and measure 2.4–3 m (8–10 ft) in total length. The Guinness Book of World Records listed the average male as having a body mass of 385 to 410 kg (849 to 900 lb) and a shoulder height of 133 cm (4 ft 4 in), slightly smaller than the average cited for male Kodiak bears.

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A polar bear is so strong, that it can kill an animal with one blow from it's paw.


Polar bear cubs learn to freeze and remain still while their mother hunts.  If they move, the mother disciples them, with a whack to the head.