Fig. 9. Polyp of Cladocora caespitosa. Photographs taken at T₃₄, showing signs of tissue necrosis. (A) Tissue retraction started from the distal portion of the calyx; the arrow shows the direction (from 1 to 2); (B) tissue then underwent necrosis around the calyx edge (arrow); (C) necrosis finally reached the inside of the polyp; the arrow shows the lack of polyp tissue inside the corallite. Scale bar, 1 mm.