And by the end of 2020, researchers hope to have every coral reef mapped in detail, which would provide a baseline for monitoring bleaching events and other short-term changes.

Reefs in Florida and the Caribbean struggled for years with pollution and rising temperatures. Then stony coral tissue loss disease arrived in 2014, decimating corals in a deadly wave along ...

Since 2014, a mysterious illness known as stony coral tissue loss disease has plagued Florida’s reef tract, killing off nearly half the state’s hard corals, whose rigid limestone skeletons ...