An official website of the United States government.
Here's how you know we're official.

Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure websites use HTTPS

A small lock or https:// means you’ve safely connected to a .gov website. Share sensitive information only on official, secure websites.

U.S. National Marine Sanctuary System

Map of the U.S. National Marine Sanctuaries System — The U.S. National Marine Sanctuaries System are a network of underwater parks encompassing more than 620,000 square miles of marine and Great Lakes waters from Washington state to the Florida Keys, and from Lake Huron to American Samoa. The network includes a system of 17 national marine sanctuaries and Papahānaumokuākea and Rose Atoll marine national monuments. (Photo credit: NOAA)

Corals Topics

Welcome What are corals? What is Zooxanthellae? How do corals grow? How do coral reefs form? Where are corals found? How do corals reproduce? Why are coral reefs important? What are the major threats to corals? - Climate change - Pollution - Diseases - Fishing impacts What are the other threats to corals? Protecting corals - Laws and partnerships Protecting corals - Protected places Restoring corals

More Information

Roadmap to resources References Acknowledgements

Get Social

Last updated:

08/02/24

Author: NOAA

How to cite this article