Divers swept in a fast current

Drift through Tiputa Pass, Rangiroa. The tides move water in and out of a lagoon 80x30 km size through narrow brakes in the atoll ring - passes. This creates fast rivers in the passes. Divers jump outside the pass and hang in the blue, drifting but not realizing how fast. Then, as they start seeing the bottom, it gets closer and moving faster and faster....