This film by Julie Gautier from Bluenery Productions puts free diving in the same adventure category as BASE jumping. Nothing before filmed under water gives you the same thrill as Steph Davis soaring through the air in wingsuit or Andy Lewis hurling himself off a bridge. Shot in 4 minutes 18 seconds you'll hold your breath right along with free diver Guillaume Nery as he descends 663 feet to touch the bottom of Dean's Blue Hole, the world's second deepest underwater sinkhole in a bay west of Clarence Town on Long Island, Bahamas. Gautier describes this feat as underwater BASE Jumping. But since this environment is neither a bridge, antennae, span nor earth we're going to need another letter.