Student Project Figures Figure 18 Figure 18.  Images of putative Symbiodinium sp. within sponges.  (A) image curtesy of M. Achlatis of actual Symbiodinium sp. within Cliona orientalis. Black arrows show position Symbiodinium sp. (B) image of putative Symbiodinium sp. within Tethya robusta. Figure 17 Figure 18