While Tiger Shark diving, I had a Go Pro facing towards me as well as in front of my camera rig so I could later see what was going on behind me. This is what I discovered after diving with lots of lemon, tiger, Caribbean reef and other sharks in the water. Fortunately, no sharks tried sneaking up behind me even with yellow fins on. Next time I do this dive, I think I will figure a way to add rear view mirrors to my camera rig. LOL. Enjoy.