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The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed.The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb).
Arctic Tale is a 2007 American documentary film from the National Geographic Society about the life cycle of a walrus and her calf, and a polar bear and her cubs, in a similar vein to the 2005 hit production March of the Penguins, which was adapted for an English-language release by National Geographic.
Although polar bears spend most of their time on the ice rather than in the water, polar bears show the beginnings of aquatic adaptation to swimming (high levels of body fat and nostrils that are able to close), diving, and thermoregulation. Distinctly polar bear fossils can be dated to about 100,000 years ago.
A polar bear and its cub. Animals that are active in the winter have adaptations for surviving the intense cold. [55] A common example is the presence of strikingly large feet in proportion to body weight. These act like snowshoes and can be found on animals like the snowshoe hare and caribou.
The increase of rotten ice vs. solid ice in the Arctic affects ocean-atmosphere heat transfer and year-to-year ice formation, as well as the lives of the Inuit, sea mammals such as walrus and polar bear, and the microorganisms that live inside the ice. Rotten ice has a subtype called "candle ice", which has a columnar structure.
The ringed seal species is the smallest true seal, and gets its name from a distinctive patterning of light spots on dark grey colored fur. The ringed seal is commonly preyed upon by Polar bears, Arctic foxes, and Killer whales. Population estimates and survival rates are unknown, but average life expectancy is 15-28 years.
The polar bear then fled to a nearby wooded area, where it later died from the gunshot wounds. Officers with the Nishnawbe-Aski Police Service responded to the scene after reports of gunfire and a ...
The polar bear is a major predator of Arctic seals and walruses, particularly pups. Bears may seek out seals, or simply wait for them to come by. Other terrestrial predators include cougars, brown hyenas and various species of canids, which mostly target the young. [103]
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