Colonies are corymbose cushions, with short uniform branches. Axial corallites are distinctive; they are tubular in shape. Radial corallites are closely compacted and all the same size. They have prominent lower lips giving a scale-like appearance.
Commonly green with orange tips, also a distinctive bright salmon pink, pale green or blue (which may photograph purple).
Shallow water, usually reef flats, but also lagoons and upper reef slopes.
Taxonomic note: This species is divisible into several smaller semi-distinct taxonomic units. Source reference: Veron (2000). Taxonomic references: Veron and Wallace (1984), Wallace (1999, and as A. spathulata Brook, 1891, in part). Additional identification guides: Veron (1986), Nishihira and Veron (1995).
displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Acropora millepora.Great Barrier Reef, Australia.Corymbose colony with thick tapering branchlets in shallow water.Mary Stafford-Smith.