Communication

Whales use sound for communication:

Dolphins use sound to communicate with other dolphins, and to echololate when hunting. This adaptation is especially useful since light does travel well through water.
Humpbacks are the only whales known to "sing"--it's one very specific type of communication not related to echolocation or other forms of communication. Humpback Whales sing the most during mating season. They sing long complicated songs with repeating patterns. These songs last a few minutes to more than half an hour and can be heard up to 100 miles away.

Humpback Whale

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