Characters: Colonies are submassive, columnar or encrusting and commonly exceed 2 metres across in turbid water. Corallites sometimes vary greatly in size depending on where they occur on the colony; they are usually 3-4.5 millimetres diameter. Usually eight to twelve septa reach the corallite centre. Tentacles are seldom fully extended during the day.
Colour: Usually grey, also pink, green or brown.
Similar Species: Galaxea paucisepta, which has smaller corallites. See also G. cryptoramosa.
Habitat: Reef environments protected from strong wave action.
Abundance: Common.
Taxonomic Note: A species complex.
Taxonomic References: Veron and Pichon (1980); Veron and Hodgson (1989); Veron (2000a);
Identification Guides: Veron (1986a); Sheppard and Sheppard (1991); Nishihira and Veron (1995); Chan, Choi, McCorry et al. (2005); Pichon, Benzoni, Chaineau et al. (2010); Turak and DeVantier (2011b);
