| Global distribution. |
| Skeletal detail. Showing monticules and corallites. |
| Surface detail. Ryukyu Islands, Japan Photograph: Charlie Veron |
| Forming thick columns. Vietnam Photograph: Charlie Veron |
| A massive colony. Papua New Guinea Photograph: Gerry Allen |
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Characters: Colonies are massive and rounded, with small uniform monticules 2-3 millimetres diameter. Polyps are not extended during the day. Colour: Dull cream, brown or green. Similar species: Hydnophora exesa. Habitat: All reef environments but primarily in lagoons and protected slopes in the Pacific and wave washed reef flats in the Red Sea. Abundance: Uncommon.
Source reference: Veron (2000). Taxonomic references: Wijsman-Best (1972), Veron, Pichon and Wijsman-Best (1977). Identification guides: Randall and Myers (1983), Veron (1986), Sheppard and Sheppard (1991), Nishihira and Veron (1995), Coles (1996).
