Groupers on guard

Researchers from Florida Atlantic University’s Harbor Branch Oceanographic Institute have received up to $5 million from the Defense Advanced Research Projects Agency as part of the Persistent Aquatic Living Sensors program. The goliath grouper generates low-frequency sounds when they are approached by divers. The “boom” sounds that they make are acoustically distinct from other species of groupers, which will alert authorities to a potential threat.

Kevin Gale
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