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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.
- Scientists learn how otters stay hotteron July 8, 2021 at 8:34 pm
Sea otters are a hardy lot.
- Last ice-covered parts of summertime Arctic Ocean...on July 1, 2021 at 3:00 pm
In a rapidly changing Arctic, one area might serve as a refuge—a place that could continue to harbor ice-dependent species when conditions in nearby areas become inhospitable. This region north of Greenland and the islands of the Canadian Arctic Archipelago has been termed the Last Ice Area. But research led by the University of Washington suggests that parts of this area are already showing a decline in summer sea ice.
- Federal appeals court rejects Trump...on June 8, 2021 at 7:18 pm
The U.S. 9th Circuit Court of Appeals this week rejected a decision by the Trump administration that Pacific walrus no longer qualified to be listed as a threatened species.
- Researcher describes four new species of sponge...on May 17, 2021 at 7:06 pm
The ocean is a big place with many deep, dark mysteries. Humans have mapped no more than 20% of the sea, and explored less. Even the kelp forests of Southern California—among the best studied patches of ocean on the planet—hide species not yet described by science.
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Humans cannot live on protein alone—even for the ancient indigenous people of the Pacific Northwest whose diet was once thought to be almost all salmon.