The above specie is knowns as table coral which belong to the genus Acropora, some called them as elkhorn or staghorn coral. Acropora species are one of the major reef corals responsible for building the immense calcium carbonate substructure that supports the thin living skin of a reef. Acropora is most common in shallow reef environments with bright light and moderate to high water motion. Many small reef fishes live near their colonies and retreat into the thicket of branches if threatened.
They can come in different colors, such wonderful to behold while underwater! More often they are decorated with colorful fishes hovering over them, mostly claiming as their shelter and abode.