montastraea

Great Star Coral (Montastraea cavernosa)

…a species of colonial brain coral (Faviidae) which occurs in shallow/moderate Caribbean waters. Great star coral colonies can grow quite large with colonies forming massive “boulders” over 5 feet (1.5 m) wide, with individual polyps the size of human thumbs! Like other corals great star corals are carnivorous, with polyps feeding on passing zooplankton. 

Classification

Animalia-Cnidaria-Anthozoa-Scleractinia-Faviidae-Montastraea-M. cavernosa

Image: NOAA