Over the next 20 years, scientists estimate about 70 to 90% of all coral reefs will disappear primarily as a result of warming ocean waters, ocean acidity, and pollution.
Expand that out to 2100 and it’s “looking quite grim,” says Renee Setter, a marine scientist at the University of Hawaii in Manoa. By 2100 there will be nearly zero suitable coral habitats remaining, eliminating nearly all living coral reef habitats.