Playing sounds of healthy coral on reefs makes fish return (2019)
Underwater speakers playing healthy coral reefs noises double the amount of fish on damaged reefs, giving scientists hope that sound could be used to help restore them.
https://www.abc.net.au/news/science/2019-12-03/great-barrier-reef-coral-fish-acoustics/11760016
Bigger stressors like climate change, pollution and overfishing still need to be addressed