Aspect: Appears as a light brown, or brown, solid boulder-shaped mass of tight, small and deeply pitted corallites. Population: Common. Notable feature: Corallites are relatively small, funnel shaped, and bordered by some 28 septa, the outer edges of which (the costae) penetrate those of a neighbouring polyp septa array in a manner reminiscent of cogworks. Environment: Relatively shetered areas at depths of between 3 and 20 metres. Behaviour: -
