This was a small school, maybe around 100. They did the spiraling thing near the surface, and as I was getting up to them, they spiraled 5' away from me. It was hard to keep up with them on the way down, but I did snap a few shots. Too bad it was raining that day, it wasn't bright enough to get a good shot without having the strobe on maximum.
C5050Z in Patima housing, Nikonos 105 strobe.