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  Walrus Pictures

There are 27 picture matches for 'Walrus'.
Walrus
Togiak NWR, Alaska
Walrus
Photographer: Bill Hickey
Source: US Fish and Wildlife
This image is in public domain.

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More About Walruses ...
Walruses are large semi-aquatic mammals that live in the cold Arctic seas of the Northern Hemisphere. The two subspecies are the Atlantic, Odobenus rosmarus rosmarus, and the Pacific, Odobenus rosmarus divergens. The Pacific walrus is slightly larger, the male weighing up to 4000 lb (1.8 t).

The walrus is a member of order Carnivora and is the only species in the family Odobenidae. Odobenus is compounded from "odous" Greek for tooth and "baino" Greek for walk, based on observations of walruses using their tusks to drag themselves along. Rosmarus is based on the Swedish word for walrus. Divergens is based on Latin for turning apart, referring to the tusks.

Walruses mate in the water and give birth on land or ice floes. They feed in the water, diving to depths of 300 ft (91 m), sometimes staying under for as long as a half hour. Male walruses compete for territory, often fighting each other; the winners in these fights breeds with large numbers of females.

Pacific walruses spend the summer north of the Bering Strait in the Chukchi Sea along the north shore of eastern Siberia, around Wrangel Island, in the Beaufort Sea along the north shore of Alaska, and in the waters between those locations.

Walruses spend about half their time in the water and half their time on beaches or ice floes where they gather in large herds. They may spend several days at a stretch either on land or in the sea. In the sea they sometimes catch fish but generally graze along the sea bottom for clams which they suck from their shells.

There are about 200,000 Pacific walruses; about 3000 are harvested annually by Alaskan natives. They have long tusks, which are elongated canines used for fighting and display. Ivory from the tusks is used for carving. The penis bone of the male is called an oosik by the natives, and is used in making knives. The only natural enemies of the walrus are man and the polar bear. Polar bears hunt walruses by rushing at them, trying to get the herd to flee, then picking off calves or other stragglers.

The breeding season for walruses is midwinter, a time spent in the southern Bering sea. The males show off in the water for the females who view them from pack ice. Males compete aggressively for this display space with each other. Mating is probably in the water. After fertilization the fertilized egg is dormant for several months, then a gestation period of 11 months follows. When a calf is born it is over 3 ft (1 m) long and able to swim. Birth takes place on the pack ice; the calf nurses for about 2 years, spending 3 to 5 years with its mother. Females are mature at about 6 years, males at 9 or 10. A walrus lives about 40 years.
Taxonmony
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Odobenidae
Source: Wikipedia Read more about Walruses
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