Well do you understand why the corals are disappearing? Let's not argue, but debate. If you don't understand something ask me. I don't understand some of the really technical stuff and don't have some of the experience other people have, but I am pretty good at explaining things.
Instead of debating you want to try to post some photos of animals and we can guess what they are? Perhaps this time we can just submit our answers by PM, so others will have a chance to guess.