I thought I'd do a follow-up simply to provide folks with information should they decide to book a bull shark dive at Playa down the road. Prior to doing two bull shark dives in late December, I spent several hours with my guide learning what makes bull sharks 'tick.' Since I had never dove with bull sharks previously, the instructional time was well spent.
Bull sharks tend to be very sensitive to electrical disturbances. I dove my full camera rig, but didn't turn on the strobes. Discharging the strobes would've probably resulted in the sharks vacating the area pretty quickly.
Unfortunately, I had anticipated having the bulls come in much more closely and rigged with my 10-24mm lens. I got photographs, but would've done much better with a lens with longer reach. With short focal length wide angle lenses you get that 'rear view mirror objects are closer than they appear' thing. Next time, I'll rig with my longer lens (Nikkor 16-85mm).
The depth of the dive site typically put us in the neighborhood of 95'-100'. I was expecting a longer surface interval between dives, but ours was pretty short. My computer gave me 17 minutes at depth during our second dive and we ended-up staying 19 minutes. This put me into deco and the remainder of our dive was spent doing the necessary safety stops.
Overall, I enjoyed the dives and plan to do it again. I have a few bull shark photographs posted in the Cozumel portfolio folder at
www.cortezbluephotography.com.
-AZTinman