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How whales and dolphins use the sounds they make

How whales and dolphins use the sounds they make

John Rafferty, associate editor of Earth sciences of Encyclopædia Britannica, discussing the sounds that whales make and the differences between the sounds of baleen whales and toothed whales.
Encyclopædia Britannica, Inc.
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Transcript

All cetaceans, that is whales, dolphins, and their relatives, can produce sound. Toothed whales, which include the dolphins, killer whales, porpoises, and the sperm whale, produce high-frequency sounds that are useful for echolocation. Baleen whales produce sounds that are lower frequency than toothed whales, and these are primarily used in communication. The low-frequency sounds that baleen whales produce are among the loudest sounds that are produced by animals on the planet.
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