Is walrus a mammal or fish?

A walrus is a mammal. It belongs to the order Carnivora, which also includes seals, sea lions, and bears. Walruses are pinnipeds, which means that they are semi-aquatic marine mammals. They have streamlined bodies, flippers, and a layer of blubber that helps them stay warm in the cold Arctic waters. Walruses use their tusks, which are actually modified canine teeth, to dig up clams and other shellfish from the ocean floor. They are social animals and live in herds. Walruses are found in the Arctic Ocean and sub-Arctic seas.