shown veron has discovered and studied more than a 5th of the world's corals. he spent more than 7000 hours underwater and a 75 year old isn't finished yet. as soon as i'm in the water. i feel i'm at home i really do. their very very essential thing about causes they build their own place to live corals or got together with l.b. to build things the nothing on earth could possibly rival that's how they live and i reckon that's is fascinating it is biology you can get. the corals of the great barrier reef have been bleaching out for years because the ocean is warming due to climate change and. i predicted that by 2015 the carbon dioxide levels would be so high that it would cause the bleaching practically every year. build horrible to be right scientists long to be right because that's what they're there businesses but it's all happening and the consequences of that have turned out to measure worse than those predictions the earth's largest coral reef system a unesco world heritage site is in trouble. it's exactly like me seeing my family slowly dying of somethin