Acrobats of the Sea: A member of the pinniped family, seals are aptly suited to their watery environment. With streamlined bodies, eyes that see well underwater, ear passages and nostrils that clamp shut while underwater, and insulating blubber, they are the acrobats of the sea.All Shapes and Sizes: Seals come in many different shapes, sizes and colors, and can be found in a variety of ocean habitats. The largest pinniped, the male southern elephant seal, can weigh as much as 5 1/2 tons. Its distinctive nose, which resembles an elephant's trunk, inflates when roaring to ward off male rivals during breeding season. The weddell seal uses its long upper incisor teeth to bite holes in sheets of ice to create breathing holes after its one-hour dive to find fish and squid.
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