• Commonly called the ‘stag horn coral’.

• A major coral forming anthozoan common in coral reefs.

• Branching colony has small, crowded polyps housed in cylindrical cups called corallites.

• Entire Skelton of whale colony called corallum is present.

• Porous portion of corallum in between the corallites is called Coenosteum.

• From the thecal wall to centre of thecal cavity are numerous vertical partitions, called Selerosepta.