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Wall Diving
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Occurs on rock and reefs that run vertically, usually run from shallow to deep.
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Water Pressure
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Force per unit area exerted by the weight of water, each 33 feet of sea water exerts a pressure equivalent to one atmosphere, or 14.7psa.
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Wet Suit
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Any suit that provides thermal protection underwater by trapping a layer of water betweens the diver's skin and the suit.
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Wheel
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A dive table used to plan muti-level dives.
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Windward
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A point or side from which the wind blows; in the direction from which the wind blows; as opposed to, leeward.
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Wreck Diving
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Diving on natural or man-made shipwrecks; specialty courses are available.
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