The Professional Association of Diving Instructors (PADI) is the world's largest recreational diving membership and diver training organization founded in 1966.
	The Divers Alert Network (DAN) is a non-profit organization devoted to assisting divers in need. The DAN Research department conducts significant medical research on recreational scuba diving safety.
	Dutch Springs is an attraction for scuba divers of all levels. Sunken wooden platforms are used for diver certification testing, and numerous attractions such as a fire truck, school bus, trolley and several aircraft are submerged at different depths throughout the quarry.

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