Coral Reefs...are they becoming a thing of the past?

I have long ago quit the use of sun screen in favor of light weight sun blocking cloths. I now find out it is problematic in the water for corals. Corals have been bleaching at alarming rates mostly due to ocean warming, but sunscreen isn’t helping. Anyway I am posting a link about what’s happening on the reefs.

https://www.nbcnews.com/news/world/scope-great-barrier-reef-s-massive-coral-bleaching-alarms-scientists-n867521

Some are dying rapidly and some are at great risk.