Appearance
Corals of Fungia fungites are mostly solitary, some attaining 30 centimetres (12 in) in diameter. The juveniles attach themselves to rock but larger individuals detach themselves and become free living. They are found in various bright colours including white, pink, red, purple, blue and yellow and are popular with keepers of reef aquariums. The discs are either round or oval and the central mouth, which is surrounded by tentacles, may be a slit. The polyp sits in a calcareous cup, the corallite. The septa are vertical skeletal elements inside the corallite wall and the costae join the septae and continue outside the corallite wall and underneath the coral. Both the septae and costae are robust.