9781422279151

AT HOME IN THE WATER

Whales killed in traffic accidents. Dolphins with measles. Starving sea li- ons and overheated polar bears. All over the world, marine mammals are facing prob- lems. Some species have become extinct. They are threatened by everything from hunt- ing and fishing to ship strikes, pollution, and global warming. But there are also some success stories as people learn more about marine mammals and how to protect them. Sentries of the Sea M illions of different species live in the ocean, but only a tiny fraction are mammals. There are only about 125 dif- ferent species of marine mammals in the

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