A 'coral island' is the result of an
atoll whose
lagoon has dried up or been filled in with
coral sand and
detritus. This state is typically the last in the life cycle of an island, the first being volcanic and the second being an atoll. Most of the world's coral islands are in the
Pacific Ocean. The American
territories of
Jarvis Island,
Baker Island and
Howland Island are clear examples of coral islands. Also, some of the
islands belonging to Kiribati are considered coral islands.