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,
Ari Atoll islands in the Atoll designated for tourist resorts. Each island resort is self-contained with accommodation and recreational facilities such as tennis court. Scuba diving is the most popular tourist activity in the Maldives. The diving in Ari Atoll is extensive and is often defined by location within the atoll, either North or South. The main tourist resorts were Ari Beach, Halaveli, Maayyafushi, Twin Islands Resort, and Dhoni Mighilli Ari Atoll Ari Atoll (also called Alif or Alifu Atoll) is one of the natural atolls of the Maldives. It is one of the biggest atolls and is located in the west