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Horn Corals

Acropora Oken 1815

Description

provided by World Register of Marine Species
Colonies are usually ramose or arborescent, bushy or plate-like, rarely encrusting or submassive. Corallites are of two types, radial and axial; septa are in two cycles; columellae are absent; corallite walls and coenosteum are porous. Polyps are usually only extended at night (Veron, 1986). Occur as plate, table and branching colonies. Most have light skeletons and are fast growing. Corallites are characteristically densely-packed and cup-shaped, 2-3 mm across, often protruding 2-3 mm from the branch surface. In most species, terminal corallites at the tips of branches are enlarged and obvious. Colour: terminal corallites are often bright pink, pale blue or yellow (Richmond, 1997).
license
cc-by-4.0
copyright
WoRMS Editorial Board
bibliographic citation
Veron, J. E. N. (1986). Corals of Australia and the Indo-Pacific. <em>Angus & Robertson Publishers.</em>
contributor
Edward Vanden Berghe [email]