Recording Red Hind Grouper Grunts (VIDEO)

Florida Atlantic University

Caption

Each winter, red hind groupers gather under the full moon, grunting low-frequency calls to attract mates and defend territory. Researchers used acoustic passive technology to detect their grunts by deploying specialized underwater microphones via the autonomous wave glider, a device they developed themselves.

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FAU Harbor Branch

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Credit: FAU Harbor Branch

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