If it's the temperature problem. I think there's still a hope for saving the coral reef....if there;s problem in water conditions like the parameters, it's a big big problem to save them.
this is what I think, if it's just temp....they can build and block a big area, it can be done, just need funding and i bet that the Aust can do it, it's jus the authority to do it. from there they can try to control the temp. But in such cases, there may not be allow to sell coral at all, totally illegal.