Aspect: Appears as a bouquet of relatively spaced oval flowers in which the individual "flowers" are the corallites. These grow on a thick, sturdy stem (theca) from a domed base of hard calcium carbonate. They can be single, but usually are twinned or tripled. Population: Very common. Notable feature: Large and conspicuous costa and septae. Transulcent polyps fully emerge at night only. Environment: Found at depths of between 5 and 40 metres. Behaviour: -
