Also known as Branching Coral, Elkhorn Coral, Fused Staghorn Coral, Staghorn Coral, Table Coral.
Found in encrusting colonies over intertidal and subtidal shallow reef edges and tops exposed to strong wave action over lagoons and reef flats. This acropora is sturdy and encrusting, corallites when formed are of variable size and face in different directions.
They feed on plankton.
Length - 100cm
Depth - 0-15m
Stony corals have hard stony skeletons, their polyps have six tentacles or are made up of multiples of six. These are usually nocturnal, however if the sky's are overcast, then many will feed during the day.
Generally the more robust corals life on exposed areas, while the smaller corals live in sheltered lagoons or deeper waters.
Stony corals are reef building corals and embedded in their flesh are thousands of minute single-celled marine plants called zooxanthellae which accounts for their colour.
These corals support a huge diversity of life, their main predator being the crown-of-thorns sea star. Ref: http://www.coralsoftheworld.org/species_factsheets/species_factsheet_summary/acropora-palmerae/