Acropora

Acropora is a genus of small polyp stony coral in the phylum Cnidaria. Some of its species are known as table coral, elkhorn coral, and staghorn coral. Over 149 species are described. Acropora species are some of the major reef corals responsible for building the immense calcium carbonate substructure that supports the thin living skin of a reef.

== Anatomy and distribution == left|250px|Flight through a computed tomography|μCT image stack of an Acropora coral from three views; the "arms" are mostly hollow. This coral had been hot glued onto a stone and later grew over it.