There hasn’t been much good news about coral recently – but in Grenada one project is using towers of concrete to encourage marine life and create new reefs.
The history of artificial reefs hasn’t always been a glorious one.
Decades ago piles of tyres were sunk – as were ships.
Sadly the ships had not always been properly cleaned which sometimes led to the leaching of toxic chemicals into the water.
Things have improved since then and new innovations have crept in.