The park waters are clear and warm with a diversity of coral and fish populations. View the list of Corals (many are illustrated). Over 250 coral species occur in the territory, representing about one third of all coral species found throughout the Indo-Pacific region. Dominant genera are Montipora and Porites, followed by Pavona, Pocillopora, Psammocora and Acropora.
Safety Caution: The channels, or ava, draining tide or surge buildup from the park's lagoons carry very strong rip currents. Beware of these areas.
Did You Know?
Coral reefs in American Samoa and Guam (with more than 250 coral species) have the greatest coral biodiversity of any United States national park site.