Characters: Colonies are flabello-meandroid with valleys more or less connected by a light blistery coenosteum. Sometimes living parts of colonies are separated by dead basal parts. Vesicles are the size of grapes and usually have the shape of grapes but may be tubular, bifurcated or irregular, depending primarily on the state of inflation. Colour: Cream or bluish-grey. Similar species: Plerogyra discus. Habitat: Protected reef environments, especially, but not necessarily, in turbid water. Abundance: Usually uncommon.