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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.