Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Coral tissue loss revealed by a white skeleton. The green dots indicate macroalgae; the red dots indicate cyanobacteria-associated tissue loss; and the blue dots indicate live coral.
Public Domain.
