Behind the Shot: Blue Triggerfish

Blue triggerfish (Pseudobalistes fuscus) are common in the Red Sea, but when I saw this one totally absorbed by the cleaner wrasse darting in and out of its gills, I was able to get in close enough for an unusual, abstract shot.
SPECS:
CAMERA **Nikon D300s
**HOUSING Nauticam NA-D300s
LENS **Nikkor 60mm
**STROBES None; magic filter
SETTING S f/7.1, 1/100 sec, ISO 200