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Ctenella chagius : ウィキペディア英語版 | Ctenella chagius
''Ctenella chagius'' is a species of stony coral (''Scleractinia'') in the family Meandrinidae. It forms solid, smooth hemispherical domes and is found in the Indian Ocean in the vicinity of the Chagos Archipelago. ==Description== ''Ctenella chagius'' is a massive, hemispherical, colonial coral with a fissured surface and brain-like appearance. The individual polyps that secrete the stony skeleton project from stony cups called corallites arranged in rows in long meandering valleys. The width between the solid ridges on either side is about with the valleys being about deep. The fine septa that radiate from the corallites are closely packed and evenly spaced, some continuing upwards and over the ridges.〔(Family Meandrinidae ) Classification of Scleractinian (Stony) Corals. Retrieved 2012-11-20.〕 This coral is a pale brown colour and can grow to a metre (yard) in diameter. It is a zooxanthellate coral and has symbiotic unicellular dinoflagellate algae living within its tissues.〔
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