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The Professional Association of Diving Instructors ( PADI ) is the world's largest recreational diving membership and diver training organization founded in 1966 by John Cronin and Ralph Erickson.

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The Professional Association of Diving Instructors ( PADI ) provides courses to help improve a divers diving skills and underwater photography skills.

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The Professional Association of Diving Instructors BWRAF formula is as follows:

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0.009 seconds.