Walruses use their whiskered snouts to root out prey and blast away sediment with jets of air squirted from the mouth. They tackle shelled prey by holding them in their lips and sucking out the soft bodies.
Walruses live in large herds, sometimes of many thousands. In winter they feed in areas of thin sea ice, avoiding thick, unbroken ice, which they cannot break through from beneath. In summer, when the ice recedes, they spend more time on land.