Guillaume Nery, a Ball watch company ambassador, and former free dive world record holder made this video diving into "Dean's Blue Hole". Apparently, it is impossible for a human to free dive (dive with no oxygen tank), to the bottom of Deans Blue Hole. However, he made this really cool video to show what it might look like if a human really could reach the bottom. I actually met Guillaume, at the Ball booth in during Baselworld 2008, and he is as nice as he is talented. Guillaume Nery is wearing a Ball diver watch during the filming of this video (which took multiple shoots to get this one scene).