Acropora digitifera
Diagnosis
This coral is like a thin, with an identical colony growth form, this being groups of finger-like projections arising from encrusting basal plates. Branches, however, are usually 1 cm diameter. Axial corallites are large, up to 4 mm wide. Radial corallites are about 1 mm diameter, have thick lips on their lower side, and are aligned in rows.
There are no or very few immersed radials. There is some side branching which is not usually seen in A. humilis.
The coral prefers shallow water, but is found to 15 m. It may be very abundant, providing cover of 10-20% or more in patches
Colonies are corymbose to digitate with small terete branches.
Colour: purple, pale brown, cream or yellow, often with pale-blue, cream or yellow branch tips.
Abundance: Usually rare except for wave-washed back margins of some reefs, where it may be dominant