Atoll Atoll An atoll (, , , , or ), sometimes called a coral atoll, is a ring-shaped coral reef including a coral rim that encircles a lagoon partially or completely. There may be coral islands or cays on the rim. The coral of the atoll often sits atop the rim of an extinct seamount or volcano which has eroded or subsided partially beneath the water. The lagoon forms over the volcanic crater or caldera while the higher rim remains above water(s) or at shallow depths that permit the coral to grow and form the reefs. For the atoll to persist,
Vaavu Atoll Vaavu Atoll Vaavu Atoll is an administrative division of the Maldives comprising the natural atolls of Felidhu Atoll and the Vattaru Reef. It is the smallest administrative atoll in terms of population. This atoll is located 40 miles from capital Malé, 60 minutes by speedboat and 3 hours by dhoni. The Vaavu Atoll administrative division includes two geographical atolls; Felidhu Atoll and the small egg-shaped Vattaru Reef, which has only one little islet, Vattaru and is 9 kilometers in diameter. The easternmost geographical point of the Maldives is located at Fottheyo Muli, close to Foththeyo-bodufushi Island. No remains from the