National marine sanctuaries are protected waters that include habitats such as rocky reefs, kelp forests, deep-sea canyons, and underwater archaeological sites.
SHOW INFO/HIDE INFO
Fish swim through a coral reef in the Florida Keys National Marine Sanctuary, off the southern coast of the U.S. state of Florida. The Florida Keys National Marine Sanctuary is about 9,600 square kilometers (2,800 square miles). About six percent of that habitat is completely protected, in areas known as ecological reserves, sanctuary preservation areas, and special-use zones.