Atlantic walruses are slightly smaller than Pacific walruses. They prefer snow-covered moving pack ice or ice floes, but will also haul out on small rocky islands when ice isn't present. Walruses prefer to eat bivalve mollusks such as clams. They also eat many other kinds of invertebrates including worms, snails, squids, and crabs. Fun Facts 1.
Walruses spend about two-thirds of their lives in the water.
A thick layer of blubber insulates the walrus. During the winter, blubber may account for one-third of a walrus' total body mass. Blubber also streamlines the body and functions as an excess energy reserve. A walrus has about 400 to 700 vibrissae in 13 to 15 rows on its snout. Vibrissae are attached to muscles and are supplied with blood and nerves.