What Spooked The Subs Of The '60s? Quacking Whales

By
Geoff Brumfiel
All Things Considered | Apr 23, 2014

In the '60s, submarines picked up a mysterious quacking sound in the Southern Ocean. This "bio-duck," as it came to be known, has been heard on and off ever since, but scientists haven't been able to trace it — until now. New research shows that the quack is coming from minke whales, but researchers still don't know why.

Copyright 2014 NPR. To see more, visit http://www.npr.org/.
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Geoff Brumfiel

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