This site gives some information about the Great Barrier Reef and most importantly the need for some decent Quality Control systems for the “science” that we are using to guide public policy decisions.
In various sections you will see that despite the conventional wisdom that says that the GBR is on the brink of extinction, in fact it is one of the most pristine ecosystems in the world, well protected, and least likely to be affected by climate change (natural or otherwise). In fact the future for the GBR is excellent.
This site goes into the detail of the science of the reef. It is very encouraging
For example, look at the coral cover for 2022. It reached record high levels. Coral cover naturally fluctuates, but record high coral cover must make one question if the reef is in such bad state.