<P> Mature bears tend to eat only the calorie - rich skin and blubber of the seal, which are highly digestible, whereas younger bears consume the protein - rich red meat . Studies have also photographed polar bears scaling near - vertical cliffs, to eat birds' chicks and eggs . For subadult bears, which are independent of their mother but have not yet gained enough experience and body size to successfully hunt seals, scavenging the carcasses from other bears' kills is an important source of nutrition . Subadults may also be forced to accept a half - eaten carcass if they kill a seal but cannot defend it from larger polar bears . After feeding, polar bears wash themselves with water or snow . </P> <P> Although polar bears are extraordinarily powerful, its primary prey species, the ringed seal, is much smaller than itself, and many of the seals hunted are pups rather than adults . Ringed seals are born weighing 5.4 kg (12 lb) and grown to an estimated average weight of only 60 kg (130 lb). They also in places prey heavily upon the harp seal (Pusa groenlandica) or the harbor seal . The bearded seal, on the other hand, can be nearly the same size as the bear itself, averaging 270 kg (600 lb). Adult male bearded seals, at 350 to 500 kg (770 to 1,100 lb) are too large for a female bear to overtake, and so are potential prey only for mature male bears . Large males also occasionally attempt to hunt and kill even larger prey items . It can kill an adult walrus (Odobenus rosmarus), although this is rarely attempted . At up to 2,000 kg (4,400 lb) and a typical adult mass range of 600 to 1,500 kg (1,300 to 3,300 lb), a walrus can be more than twice the bear's weight, and has up to 1 - metre (3 ft) - long ivory tusks that can be used as formidable weapons . A polar bear may charge a group of walruses, with the goal of separating a young, infirm, or injured walrus from the pod . They will even attack adult walruses when their diving holes have frozen over or intercept them before they can get back to the diving hole in the ice . Yet, polar bears will very seldom attack full - grown adult walruses, with the largest male walrus probably invulnerable unless otherwise injured or incapacitated . Since an attack on a walrus tends to be an extremely protracted and exhausting venture, bears have been known to back down from the attack after making the initial injury to the walrus . Polar bears have also been seen to prey on beluga whales (Delphinapterus leucas) and narwhals (Monodon monoceros), by swiping at them at breathing holes . The whales are of similar size to the walrus and nearly as difficult for the bear to subdue . Most terrestrial animals in the Arctic can outrun the polar bear on land as polar bears overheat quickly, and most marine animals the bear encounters can outswim it . In some areas, the polar bear's diet is supplemented by walrus calves and by the carcasses of dead adult walruses or whales, whose blubber is readily devoured even when rotten . Polar bears sometimes swim underwater to catch fish like the Arctic charr or the fourhorn sculpin . </P> <Ol> <Li> at rest; </Li> <Li> assessing a situation; </Li> <Li> when feeding </Li> </Ol> <Li> at rest; </Li>

Where did the polar bear live with her family