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Atoll islands are low lying, with their elevations less than 5 metres (16 ft). Measured by total area, Lifou (1,146 km 2, 442 sq mi) is the largest raised coral atoll of the world, followed by Rennell Island (660 km 2, 250 sq mi). [10] More sources, however, list Kiritimati as the largest atoll
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.
The atoll is the largest raised coral reef in the world with an elevation of 8 metres (26 ft); and the second-largest atoll in the world after Kiritimati Atoll. [18] It lies at 9°24′S 46°22′E / 9.400°S 46.367°E / -9.400; 46.367 and belongs to the Aldabra Group , one of the island groups of the Outer Islands of the Seychelles ...
Caroline Island (also known as Caroline Atoll or Millennium Island) is the easternmost of several uninhabited coral atolls comprising the southern Line Islands in the central Pacific Ocean nation of Kiribati. The atoll was first sighted by Europeans in 1606 and was claimed by the United Kingdom of Great Britain and Ireland in 1868. It has been ...
The world's northernmost individual coral reef is located in the Finlayson Channel, in the inside passage of British Columbia, Canada. [72] The world's southernmost coral reef is at Lord Howe Island, in the Pacific Ocean off the east coast of Australia.
The main habitat types found in the reserve are coral reefs, islands, sea grass beds and mangroves. Coral reefs are the most important habitat type in terms of area as well as biodiversity. Maldivian coral reefs are home to the richest diversity in the region and are the seventh largest in the world, accounting for 5% of the world's reef area.
At the fire's worst, he said, it looked like a volcano exploding above the canyon. "So much of the forest and the wildlife has been burnt down," said Monk, a meditation teacher. "All that stuff's ...
There are two types of lagoons, coastal and oceanic/atoll lagoons. [19] A coastal lagoon is, as the definition above, simply a body of water that is separated from the ocean by a barrier. An atoll lagoon is a circular coral reef or several coral islands that surround a lagoon. Atoll lagoons are often much deeper than coastal lagoons. [20]