Characters: Colonies are massive (especially in shallow water) or encrusting. The surface is usually irregular, with sinuous valleys 4-8 millimetres wide. Columellae are well developed although interlinked. Ambulacral grooves, if present, are fine.
Colour: Greys and browns, usually with walls and valleys of contrasting colours.
Similar species: Diploria strigosa.
Habitat: Most reef environments, especially shallow slopes and lagoons.
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