The field of bioacoustics, studying the sound of animals, extends far below the surface of oceans. Whale vocalizations can be used as data to track migration and populations. Researchers have found ways to identify which whales are making which sounds. But in oceans, human-made sounds are often louder than other noises, making it hard for marine animals to hear the sounds in their own world. Listen to this story about what can be learned by tracking whale sounds, and how new guidelines are helping whales communicate with each other.
Story Length: 7:06
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