Characters: Colonies are composed of irregular branches, mostly circular in section, with little tendency to form an encrusting base. Branches are 10-15 millimetres thick. There is little fusion of monticules. Colour: Cream, yellowish or green. Similar species: Hydnophora rigida, which has finer branches which are usually flattened and have fused monticules. Habitat: Shallow reef environments. Abundance: Usually uncommon.