Characters: Colonies are hemispherical or flattened. Corallites are immersed and sometimes crowded, with small rounded openings surrounded by feathery spinules giving the colony a spiny appearance. Coenosteum papillae are fine. Colour: Cream, grey or brown. Similar species: Astreopora randalli. See also A. myriophthalma. Habitat: A wide range of environments, especially in shallow turbid water. Abundance: Usually uncommon.