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Coelastrea aspera
''Coelastrea aspera'' is a species of stony coral in the family Merulinidae. It is a colonial species native to the Indo-Pacific region where it occurs in shallow water. It was first described by the American zoologist Addison Emery Verrill in 1866 as ''Goniastrea aspera'' but it has since been determined that it should be in a different genus and its scientific name has been changed to ''Coelastrea aspera''.〔 This is a common species throughout much of its wide range and the International Union for Conservation of Nature has rated its conservation status as being of "least concern".〔
==Description==
Colonies of ''Coelastrea aspera'' are either encrusting or massive. The surface has a honeycomb-like appearance, the corallites being cerioid (several polyps sharing a common wall) in arrangement, deep and angular, with thick, straight walls. The septa are even, with long and short septa alternating in larger corallites. Budding is usually intratentacular (inside the ring of tentacles). The paliform lobes, visible through the tissues, are large and broad in protected environments but much smaller in colonies occupying exposed positions.〔
On intertidal flat rocks, several colonies in close proximity may form a level expanse several metres across. The general colour of this coral is usually pale brown and the oral discs may be a contrasting colour, often cream.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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