Ctenella_chagius
Ctenella
Genus of corals
Ctenella is a monotypic genus of stony coral in the family Euphylliidae. It is represented by a single species, Ctenella chagius. These corals are massive in size with meandering valleys between the calyces which have solid, non-porous walls and fine, evenly spaced, solid septae.[2] They are found in the Indian Ocean, Red Sea and Mediterranean Sea.[3] It forms solid, smooth hemispherical domes and is found in the Indian Ocean in the vicinity of the Chagos Archipelago.