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 Ocean Giants: Voices of the Sea

Visit a surprising underwater world where sound takes the place of sight.

 

Program:

Episode: Ocean Giants: Voices of the Sea

Humpback whales' songs carry thousands of miles, while a sperm whale scans the ocean depths with a sonar laser beam louder than a thunderclap. "Voices of the Sea" reveals a surprising underwater world where sound takes the place of sight.

• Visit the Ocean Giants: Voices of the Sea webpage

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Duration: (49:38)
Episode Expires: Fri 11 May 2012
TV Rating: NR

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