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Reef-building corals will thrive only in warm tropical and subtropical waters of oceans and seas, and therefore atolls are found only in the tropics and subtropics. The northernmost atoll in the world is Kure Atoll at 28°25′ N, along with other atolls of the Northwestern Hawaiian Islands.
The Nilandhe Atolls- after the island of Nilandhoo, now in the northern atoll and was an important historic religious centre of the Maldives in the pre-Islamic era. Kolhumadulu - meaning atoll at the end ( kolhu ) in reference to the end of the east-west divide of the Maldives Atolls between Kaashidhoo Kandu and Kudahuvadhoo Kandu.
Canton Island typifies the isolated coral atolls dotting the Pacific Ocean. The Structure and Distribution of Coral Reefs, Being the first part of the geology of the voyage of the Beagle, under the command of Capt. Fitzroy, R.N. during the years 1832 to 1836, was published in 1842 as Charles Darwin's first monograph, and set out his theory of the formation of coral reefs and atolls.
In 2002, the wreck of a 19th-century whaling ship was found at Kure Atoll. [18] This wreck was further explored in 2005, 2006, and 2008; it is thought it may be the wreck of the sailing ship Parker. [18] [34] The Parker was a whaling ship that wrecked on Kure Atoll in 1842. [18] The crew was rescued after a few months.
The reef islands have a different structure to the atolls, and are perhaps better described as “reef platforms,” as they are small, tabular platforms that lack the salt-water lagoon typically found on reef islands. [6]
Recent scientific studies suggest that the fauna varies greatly between atolls following a north–south gradient, but important differences between neighbouring atolls were also found (especially in terms of sea animals), which may be linked to differences in fishing pressure — including poaching. [121]
Others are found in the deep ocean surrounding islands or as atolls, such as in the Maldives. The reefs surrounding islands form when islands subside into the ocean, and atolls form when an island subsides below the surface of the sea. Alternatively, Moyle and Cech distinguish six zones, though most reefs possess only some of the zones. [57]
Atolls of the United States (1 C, 2 P) V. Atolls of Vanuatu (1 C, 1 P) Atolls of Venezuela (1 C, 1 P) Atolls of Vietnam (9 P) This page was last edited on 30 November ...