Map showing extent of U.S. coral reefs

Extensive coral reefs are found in the waters of the United States and its territories. In the Atlantic Ocean, Gulf of America, and the Caribbean Sea these include reefs off Florida, Texas, Puerto Rico, and the U.S. Virgin Islands. In the Pacific Ocean, they include those of the Hawaiian Islands, Wake Island, Johnston Atoll, the Northern Marianas, Saipan, Guam, Kingman Reef and Palmyra Atoll, Howland Island, Baker Island, Jarvis Island, and American Samoa. More than 60% of the Nation’s coral reefs are found in the extended Hawaiian Island chain. Map adapted from the USGS Fact Sheet U.S. Coral Reefs—Imperiled National Treasures.