Organ Red Pipe Coral 4x3 in green Acropora is a genus of

Acropora is a genus of small polyp stony coral in the phylum Cnidaria

Brown stem corals are comprised of tightly clustered white stems which are brown at the base as the name suggests

sand-colored with light brown shades

There color is cream with interrupted spiral bands of brown

Nautilus are the only cephalopod to have a true external shell

Organ Red Pipe Coral 4x3 in green Acropora is a genus ofThe Organ Red Pipe coral (Tubipora musica) is native to the waters of the Indian ocean and the central and western regions of the Pacific ocean. It is the only known speciesof the genus Tubipora. This species is a soft coral but with a unique, hard skeleton that contains many organ pipe like tubes. On each tube is a series of polyps which each have eight feather like tentacles . These tentacles are usually extended during the day, but will swiftly