![https://www.abc.net.au/news/science/2019-12-03/great-barrier-reef-coral-fish-acoustics/11760016](https://img4.medioq.com/271/886/2440751932718868.jpg)
04/12/2019
https://www.abc.net.au/news/science/2019-12-03/great-barrier-reef-coral-fish-acoustics/11760016
Underwater speakers playing healthy reefs noises double the amount of fish on damaged reefs, giving scientists hope that sound could be used to help restore them.