Blue Whale Calls (AUDIO)

American Geophysical Union

Caption

In this recording, you'll hear two different calls of blue whale swimming off the Southern California coast, sped up three times to bring the sound into a human hearing register. Researchers aren't yet certain what these sounds mean, but comparing the calls with whale diving behavior can help elucidate their purpose.

Credit

Ana Širovi?, Scripps Institution of Oceanography

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