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walrus : a large gregarious marine mammal (Odobenus rosmarus of the family Odobenidae) of arctic waters related to the seals that has limbs modified into webbed flippers, long ivory tusks, a tough wrinkled hide, stiff whiskers, and a thick layer of blubber — Webster
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Walrus is a large flippered marine mammal with a discontinuous distribution about the North Pole in the Arctic Ocean and subarctic seas of the Northern Hemisphere. The walrus is the only living species in the family Odobenidae and genus Odobenus. This species is subdivided into three subspecies: the Atlantic walrus (O. r. rosmarus) which lives in the Atlantic Ocean, the Pacific walrus (O. r. divergens) which lives in the Pacific Ocean, and O. r. laptevi, which lives in the Laptev Sea of the Arctic Ocean.
Adult walrus are easily recognized by their prominent tusks, whiskers, and bulk. Adult males in the Pacific can weigh more than 2,000 kg (4,400 lb) and, among pinnipeds, are exceeded in size only by the two species of elephant seals. Walruses live mostly in shallow waters above the continental shelves, spending significant amounts of their lives on the sea ice looking for benthic bivalve mollusks to eat. Walruses are relatively long-lived, social animals, and they are considered to be a “keystone species” in the Arctic marine regions. — Wikipedia
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Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
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Arctic's record warming driving 'broad change' in...
on December 11, 2018 at 4:20 pm
Global warming is heating the Arctic at a record pace, driving broad environmental changes across the planet, including extreme storms in the United States and Europe, a major US scientific report said Tuesday. […]
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As Arctic ship traffic increases, narwhals and...
on November 9, 2018 at 2:23 pm
Most Americans associate fall with football and raking leaves, but in the Arctic this season is about ice. Every year, floating sea ice in the Arctic thins and melts in spring and summer, then thickens and expands in fall and winter. […]
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In Alaska, everyone's grappling with climate...
on October 22, 2018 at 3:10 pm
Coastal villages are washing into the Bering Sea, trees are sprouting in the tundra and shipping lanes are opening in an ocean that was once locked in ice. In Alaska, climate change isn't a distant or abstract concern. […]
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As sea ice melts, some say walruses need better...
on October 13, 2018 at 8:26 pm
Given a choice between giving birth on land or sea ice, Pacific walrus mothers most often choose ice. […]
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Thousands of Pacific walruses again herd up on...
on September 13, 2018 at 8:33 pm
The U.S. Fish and Wildlife Service is monitoring Pacific walruses resting on Alaska's northwest coast. […]