Marine life in the great barrier reef

The reef is made up of billions of tiny animals called albwalb reefs, plants called algae reefs and limestone deposition consists when unite coral dead with algae due to their limestone over a thousand years might be related with reef thickness of external layer several meters high live coral

And coral that builds rocks grow better when conditions exist that provide sunlight and the temperature of the water when 20 or more, where you need a good mix of air and water and good stocks of food