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BOB "The Breathing Observation Bubble" scooter diver underwater with scuba diver both giving OK sign, Tenerife Stock Photo - Alamy
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Underwater scooter allows amateur divers to explore coral reefs even if they can't swim | Daily Mail Online
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Live the excitement of diving with underwater scooters DPV (Diver Propulsion Vehicle)! - Diving Atlantis Tenerife
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