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Seals



Seals, sea lions and walruses live both on land and in the sea. When on dry land or on ice, they are very clumsy in their movements. But in the water they swim gracefully. They all leave the water for land or ice fields to give birth to their young.
The dolphins and the sea cows are sea mammals. Dolphins and porpoise look alike but usually the dolphins are larger. These animals are mainly fish eaters.
Experiments show that dolphins are intelligent and can communicate with each other. They can be trained to perform various kinds of tricks and acts.
The highly intelligent killer whale belongs to the dolphin family. Despite of its scary name, it has never been heard to attack human.