Cnidarians - Fire Coral

The scientific name for fire coral is Millepora. It has a potent sting that leaves an itchy rash on human skin. It is not technically a coral, but a kind of hydroid that encrusts other objects (including other corals). It is usually orange of red in color. Fire corals are found in tropical seas, worldwide, predominantly on reef crests and in shallow waters subject to high water movement.