Scott J. Cassell (born March 16, 1962) is an American explorer, underwater filmmaker and counter-terrorism operative. His documentary credits include over thirty-five programs for the Disney Channel, MTV (Wildboyz), Spike TV, the Discovery Channel, Animal Planet, the Space, the BBC and the History Channel. He has over 13,000 hours as a diver, and is a United States Coast Guard-qualified submersible pilot, with over 900 dives in the 'SeaMagine SeaMobile' submersible. He holds the world record for longest distance traveled by a diver (52 miles in 9.5 hours).