sierraclub.org - sierra magazine - july/august 2011 - whales - whales: the sea's mysterious giants
Photography by Flip Nicklin/Minden Pictures, from Among Giants | Captions by Della Watson
A humpback whale meets a hydrophone, in Maui, Hawaii. While both sexes make some noises, only male humpbacks sing. Researchers have discovered that the whales' songs evolve and change, much like human language transforms over time.
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