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Polar bear. 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 species is sexually dimorphic, as ...
A demi bear appears in the crest of Lawson in Canada. [7] A grizzly bear, with wings, appears as a supporter in the bearings of Norris, also in Canada. [8] Canada has armigers with polar bears in their bearings. [9] Chimerical half-bear, half-ravens appear as supporters of the Canadian Heraldic Authority.
Description Polar bears near north pole.jpg. English: Three polar bears approach the starboard bow of the Los Angeles-class fast attack submarine USS Honolulu (SSN 718) while surfaced 280 miles from the North Pole. Sighted by a lookout from the bridge (sail) of the submarine, the bears investigated the boat for almost 2 hours before leaving.
The giant predators were a deadly danger to early European explorers of the Arctic. Chris Hellier/Corbis Historical via Getty ImagesPolar bears have long held visual artists in their thrall. Over ...
Description Endangered arctic - starving polar bear.jpg. English: In summer, some polar bears do not make the transition from their winter residence on the Svalbard islands to the dense drift ice and pack ice of the high arctic where they would find a plethora of prey. This is due to global climate change which causes the ice around the islands ...
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.
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