Still editing GoPro videos. Here's the first one.
GoPro Hero3+ at 1080 resolution, 60 fps. Backscatter 3.1 deep filter.
Depth at 70-80 feet. Off Playa del Carmen Bull Shark dive with Tank-Ha (dive shop)
They were circling pretty close at 6 minutes into the video.
Recommend you click on the settings wheel at the bottom right of player and set the quality to 780 or 1080 HD, as the visibility wasn't exceptional.
http://youtu.be/BSV6f3cmQ-M