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| | Walrus - MSN Encarta |
 | | Walrus, large, marine mammal found in the Arctic regions at the edge of the polar ice along the northeastern coasts of Canada and Siberia, Kamchatka, the northwestern coast of Alaska, Greenland, northern Norway, and Ellesmere Island. |
 | | Although it was once thought that the tusks were also used to rake the ocean bottom for mollusks and shellfish, which constitute the principal food of the walrus, it is now believed that the sensitive whiskers and fleshy snout play a primary role in detecting and removing prey from the ocean floor. |
 | | Polar bears are the chief natural predator of the walrus, and humans hunt the animal for its valuable ivory tusks and for its flesh and blubber. |
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