Mr. James H. Nicholson

NOAA/NOS/NCCOS, Fort Johnson Marine Resources Center
Charleston, South Carolina, USA
Specimen: Underwater image of live coral Montastraea annularis. Note polyp tissue (green) around the mouth and base of the tentacles and zooxanthellae (red fluorescence from chlorophyll) in the tissue between polyps. Tentacles also are visible.
Technique: Fluorescence