From OpenContent Curriculum
The Pacific Walrus (Odobenus rosmarus divergens) is immediately recognized by its prominent tusks, whiskers and great bulk. Adult Pacific males can weigh up to 4,500 pounds (2,000 kg), and, among pinnipeds, are exceeded in size only by the two species of elephant seals.It resides primarily in shallow oceanic shelf habitat, spending a significant proportion of its life on sea ice in pursuit of its preferred diet of benthic bivalve mollusks. It is a relatively long-lived, social animal and is considered a keystone species in Arctic marine ecosystems.
The walrus has played a prominent role in the cultures of many indigenous Arctic peoples, who have hunted the walrus for its meat, fat, skin, tusks and bone. In the 19th and early 20th centuries, the walrus was the object of heavy commercial exploitation for blubber and ivory and its numbers declined rapidly. Its global population has since rebounded.