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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).
The key danger for polar bears posed by the effects of climate change is malnutrition or starvation due to habitat loss.Polar bears hunt seals from a platform of sea ice. Rising temperatures cause the sea ice to melt earlier in the year, driving the bears to shore before they have built sufficient fat reserves to survive the period of scarce food in the late summer and early fall.
Bear habitats are generally forests, though some species can be found in grassland and savana regions, and the polar bear lives in arctic and aquatic habitats. Most bears are 1.2–2 m (4–7 ft) long, plus a 3–20 cm (1–8 in) tail, though the polar bear is 2.2–2.44 m (7–8 ft) long, and some subspecies of brown bear can be up to 2.8 m (9 ...
Polar bear fur is not actually white, but rather clear and hollow, the better to insulate them in icy waters and help them stay afloat. When exposed to the sun, these tubular hairs yellow slightly.
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.
Ursus is a genus in the family Ursidae that includes the widely distributed brown bear, [3] the polar bear, [4] the American black bear, and the Asian black bear. The name is derived from the Latin ursus , meaning bear .
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Canada’s government has said it is home to 17,000 polar bears, or roughly two-thirds of the world’s population, which the United States listed as threatened in 2008 under the Endangered ...