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[2] [3] Atolls are located in warm tropical or subtropical parts of the oceans and seas where corals can develop. Most of the approximately 440 atolls in the world are in the Pacific Ocean. Two different, well-cited models, the subsidence model and the antecedent karst model, have been used to explain the development of atolls. [4]
The largest of these atolls is Boduthiladhunmathi, while the atoll containing the most islands is Huvadhu. Some atolls are in the form of a number of islands by time and in the form of isolated reefs, which could be classified as smaller atoll formations. All land above the surface in the Maldives is of coralline origin. The atolls of the ...
The IHO limits of the Atlantic Ocean. This is a list of islands in the Atlantic Ocean, the largest of which is Greenland.Note that the definition of the ocean used by the International Hydrographic Organization (IHO) excludes the seas, gulfs, bays, etc., bordering the ocean itself. [1]
Atolls of the Pacific Ocean (19 C, 6 P) S. Atolls of the South Atlantic Ocean (1 C) This page was last edited on 22 May 2023, at 21:08 (UTC). Text is available ...
Cross section of a coral reef in the Maldives. Most atolls of the Maldives consist of a large, ring-shaped coral reef supporting numerous small islands. Islands average only one to two square kilometers in area, and lie between 1–1.5 m (3 ft 3 in – 4 ft 11 in) above mean sea level. [1]
At its base on the ocean bed it is 30 miles wide in one of the directions tested, and 28 miles wide on the other. It rises in a gentle slope which gradually steepens to a point 2,400 feet below water level, after which it rises at an angle of 80 degrees to 840 feet below water level.
The atolls are composed of live coral reefs and sand bars, situated atop a submarine ridge 960 kilometres (600 mi) long that rises abruptly from the depths of the Indian Ocean and runs north to south.
[4] [19] The final territory is the Scattered Islands in the Indian Ocean, administratively a part of the French Southern and Antarctic Lands. This French territory consists of a range of minor uninhabited atolls in the Indian Ocean, located in the deep sea surrounding Madagascar.