What is the difference between a toothed whale and a baleen whale?
Baleen whales have baleen instead of teeth. Baleen whales are all very large and have a row of baleen plates hanging from each side of the upper jaw like a curtain. Toothed whales have teeth and except for the sperm whale, tend to be smaller than baleen whales. Toothed whales include the sperm whale, beluga and narwhal, as well as all the beaked whales, dolphins and porpoises.