Colonies are laminar and bifacial, sometimes forming contorted branches. Corallites are 3.5-4.5 millimetres diameter. Columellae are large, and paliform lobes are not well developed. Primary septa may be thick and are always exsert.
Usually grey, sometimes pale cream to dark brown or green.
Shallow protected reef environments.
Source reference: Veron (2000). Taxonomic references: Chevalier (1975), Veron, Pichon and Wijsman-Best (1977). Additional identification guides: Veron (1986), Sheppard and Sheppard (1991), Nishihira and Veron (1995).
displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Echinopora gemmacea.Ryukyu Islands, Japan.Encrusting a pile of rubble.Charlie Veron.
Echinopora gemmacea.Ashmore Reef, western Australia.E. gemmacea (right) being overgrown by E. lamellosa (left).Charlie Veron.
Echinopora gemmacea.Ryukyu Islands, Japan.Corallites at the edge of a plate.Charlie Veron.
Echinopora gemmacea.Ryukyu Islands, Japan.Corallites on a submassive colony.Charlie Veron.