Entacmaea quadricolor (Rüppell & Leuckart, 1828)
Actiniaria
Found associated with: ?

Photograph by: A. Gittenberger

Characterization (by Bas Kokshoorn): Oral disc 20-40 cm in diameter, covered with tentacles. Tentacles > 100, 5-10 cm in length, with distinct bulb near end. Stem with ornamentation, not sticky.