Scientists Pinpoint Source Of Antarctic 'Quack'

April 23, 2014 9:44 PM

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Scientists Pinpoint Source Of Antarctic 'Quack'

For decades, researchers and submarine crews in icy waters off the coast of Antarctica have been picking up a mysterious quacking sound.

The "bio-duck," as its called, has been heard on and off since Cold War patrols picked it up on sonar during the 1960s.

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