Huh........what you are missing is the fact that the mankind species is a spent force and will die out long before any coral reef is completely obliterated.......then it will be regenerated by the living remnants that likes living in sea water and without mankind to make it's day bad........what's several hundred million years to a life form that was here before the dinosaurs and will never be at the mercy of advanced technology ever again......even nuclear waste becomes inactive in that time.