Characters: Colonies are massive, usually forming large domes on reef tops. Corallites are cerioid, tightly compacted, irregular in shape and 8-10 millimetres diameter. Septa of living colonies have rounded, bead-like dentations.
Colour: Various combinations of blue-grey, green and yellow.
Similar Species: Mussismilia hispida, which has larger, less irregularly shaped corallites; otherwise these species are similar.
Habitat: Shallow or subtidal reef environments.