Search results
Results From The WOW.Com Content Network
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.
Spur and groove formations are a geomorphic feature of many coral reefs. They are ridges of reef formed by coral ("spurs") separated by channels ("grooves") which often have sediment or rubble bed. Spur and groove formations vary in their size and distribution worldwide but are a common feature on many forereefs of fringing reefs , barrier ...
Gahaafaru Atoll also known as Gaafaru Atoll or Gaafarufalhu is a small atoll at the eastern end of a large elliptical reef that has proved disastrous to many vessels with the wrecks of Aracan (1873), SS Seagull (1879), Clan Alpine (1879), Erlangen (1894), Crusader (1905) and Lady Cristine (1974). 15 kilometres (9.3 miles) long and 8.5 ...
The atoll of Tetiʻaroa in French Polynesia. An atoll (/ ˈ æ t. ɒ l,-ɔː l,-oʊ l, ə ˈ t ɒ l,-ˈ t ɔː l,-ˈ t oʊ l /) [1] is a ring-shaped island, including a coral rim that encircles a lagoon. There may be coral islands or cays on the rim. [2] [3] Atolls are located in warm tropical or subtropical parts of the oceans
Okinotorishima (沖ノ鳥島, Okinotori-shima), or Parece Vela, is a coral reef, geologically an atoll, with two rocks enlarged with tetrapod-cement structures. It is administered by Japan with a total shoal area of 8,482 m 2 (2.10 acres) and land area 9.44 m 2 (101.6 sq ft). [1]
This is more than three times the species diversity of corals in the main Hawaiian Islands. The ecosystem of the reef and its subsequent food chain is known for the distinct quality of being primarily predator-based. Sharks comprised 74% of the top predator biomass (329 g·m −2) at Kingman Reef and 57% at Palmyra Atoll (97 g·m −2).
Both sides have reported coral reef damage from ships and fishing vessels operating at certain atolls. China's report said that from 2011 to 2024 coverage of reef-building corals at the Second ...
The atoll is an important refuge for Hawaiian monk seals and Laysan albatrosses. La Pèrouse Pinnacle, a rock outcrop in the center of the atoll, is the oldest and most remote volcanic rock in the Hawaiian chain. It stands 120 feet (37 m) tall and is surrounded by coral reefs.