Transcription: All whales and their close relatives dolphins and porpoises are known as cetaceans. This term comes from ketos, a Greek word meaning sea monster. Many of the 79 different kinds of cetaceans do seem kind of scary when you first see them. Some of them are huge. The largest whales can grow to nearly 90 feet, 27 meters long, and weigh 2,000 times more than you or I. But in fact these monsters of the deep are a lot like humans in many ways. Like us, cetaceans have a bony skeleton. In fact, the bones inside whale flippers look just like the bones of a human hand. Like us, cetaceans are warm-blooded. ...
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