December 9, 2021
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Scientists who "eavesdropped" on a restored coral reef in Indonesia say their recordings of fish "whooping, croaking and growling" are the reef coming back to life. Over a decade, the reef has been re-seeded with new corals. The researchers used underwater microphones to record at the site. The sounds, some of which have never been recorded before, provide an audible measure of the health of the reef, researchers say.
