San Diego, California: The Running of the Squid
2011's market squid run was one of the most incredible phenomena I have ever experienced while diving.
Every year, tens of thousands of these foot-long squid congregate to mate, lay eggs, and die. The water was thick with San Diego squid--visibility was limited not by particulate in the water column, but by the density of squid swimming in every direction. I experienced vertigo many times, and if I felt a sudden tug at my camera, it was because a squid had attached itself to my camera's strobe arms. When I turned on my canister light, thousands of squid swarmed and followed me. The experience was truly intense.
It was actually somewhat difficult to isolate just one squid in the frame:
Finally, a short movie: