Colonies are massive and cerioid, with laterally compressed corallites of uneven height. Walls are acute: septa are thick, with large teeth. Columellae are barely developed. Colonies have a thick fleshy mantle which is covered by fine papillae.
Very colourful: red, purple and green are the most common colours, with corallites and walls almost always of contrasting colours.
Shallow reef environments especially of subtropical localities.
displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Acanthastrea lordhowensis.Norfolk Island, Coral Sea.Colonies vary in appearance according to colour, also the degree of extension of the corallite mantles as seen here (central colonies) with the faviid Goniastrea australiensis (top left, top right and bottom left)..Charlie Veron.
Acanthastrea lordhowensis.Great Barrier Reef, Australia.A large colourful colony.Charlie Veron.