Walruses maintain such a high body weight because of the blubber stored underneath their skin.
Putting out to sea, the men hunted whales, porpoises, walruses and seals.
Ear canals in seals, sea lions, and walruses are similar to those of land mammals and may function the same way.
Male walruses may help inexperienced young as they learn to swim, and have even been recorded caring for orphans.
Walruses are specialized for feeding on bottom-dwelling mollusks.
Otariids use their front limbs primarily to propel themselves through the water, while phocids and walruses use their hind limbs.
Modern walruses do not use their teeth to chew molluscs like sea otters do.
There are fifteen to twenty types of marine mammals, including whales, dolphins, seals and walruses.
