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Mystery Underwater Sound Identified

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An underwater noise that has long confounded Navy sonar operators turned out to be a call of the minke whale.

Scientists at the Southwest Fisheries Science Center in San Diego made the discovery this fall when they heard the noise during a research expedition and saw a minke whale surfacing.

"The military was very interested in learning what the sound was, even though they knew it was not a threat," said scientist Jay Barlow.

For decades, sonar operators in the North Pacific had heard the mechanical twang, similar to the sound of an electric razor.

user posted image View: Full Article | Source: Sacromento Bee

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