New project in Florida Keys restores vital organisms in world’s largest reef restoration programme.

A new method of farming coral could save reefs from damage of pollution, climate change, and storms.

Coral reefs, one of the world’s oldest ecosystem, face a consant threat of destruction or degradation, but a new project aims to replace and restore the vital organisms.

Al Jazeera’s Andy Gallacher reports from the world’s largest reef restoration programme in the Florida Keys.