"Fish Music Playlist Aims to Revive Coral Reef"

Scientists are using underwater microphones to study and protect coral reefs threatened by climate change and pollution. They have found that many fish live by the lunar cycle, ramping up the sounds they make depending on the phase of the moon. The scientists have set up underwater speakers to broadcast their recordings of healthy reefs in hopes of luring back the coral larvae. The effort seems to be working, with two to three times as much coral settlement on the acoustically enhanced reef compared to a degraded reef where they're not playing sounds.