The walrus resides in North Pacific, North Atlantic, and Arctic waters. Now largely restricted to northern latitudes it was once much more widely distributed, particularly the Atlantic walrus which ranged as far south as Cape Cod in North America before hunting wiped out southern populations. Primarily associated with pack ice in winter, walruses will also haul out on land. Natural History Atlantic walrus males average 3.0 m in length and weigh approximately 800-900 kg. Pacific walrus males are somewhat larger, averaging 3.2 m and approximately 1200 kg.
Females are generally smaller.
Although they appear to be naked, the brown skin is covered with short, coarse hair. Both sexes have enlarged upper canine teeth which appear as external tusks, and are larger in males. Males are sexually mature at approximately 15. Some females may mature by age 4, but age 7 - 8 is usual. Gestation lasts 15 months and lactation 1 to 2 years.