Goniopora spp. with living morphologies that are similar to that of G . stokesi . Living specimen (A1), underside of the corallum (A2), and corallite structures (A3) of a free-living form of G. djiboutiensis (AM74) at AM. Living specimen (B1) and corallite structures (B2) of G. djiboutiensis (IR22). Living specimen (C1) and corallite structures (C2) of G. cf. djiboutiensis (MO53). Polyps of colonies IR22 and MO53 are similar to those of G. stokesi. Each bar = 2 mm.