Characters: Branches thin and tapered to a point, hence they have a needle-like appearance. Branches are widely spaced, less than 100 millimetres long, and usually fuse in an irregular manner. They are very fine and delicate, so that colonies fall apart if disturbed. Corallites are arranged in neat rows along branches. Tentacles are extended only at night. Colour: Pink or cream. Similar species: Seriatopora hystrix, which has much larger branches. Habitat: Protected reef environments. Abundance: Usually uncommon.