Coral reefs all across the Caribbean Sea are now at mass bleaching temperatures.
Coral mortality will depend on how hot it gets in the coming weeks and for how long.
Below is the latest daily Coral Bleaching HotSpot map for the Caribbean (Goreau & Hayes, 1994). Yellow areas are more than one degree above the average temperature of the hottest month. In round numbers a one degree HotSpot for one month will cause mass bleaching, a 2 degrees will cause mass coral death, unless the corals are protected with Biorock technology, as shown in Maldives, Thailand, and Indonesia.