QUESTION: What is the difference between the leopard seals, the weddell seals, and the elephant seals and what special features do they have to survive in such a cold enviornment? Mrs. Young's Class Lake Forest Elementary School Lake Forest, CA ANSWER from Polly Penhale, Program Manager, Office of Polar Programs Tue, 25 Feb 97 11:18:33 EST Dear Students, Leopard seals, crabeater and Weddell and Ross seals are ice-seals, which means that they breed on sea-ice or fast-ice (ice attached to the land). Elephant seals breed on the exposed coastline of Antarctica or subantarctic islands. The seals have a thick blubber layer, which helps protect them from the cold. Seals, such as the Weddell seal, have sharp teeth, which they use to make holes through the ice so that they can go back and forth into the water for food. Thanks for your question! Polly P.