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Drift diving – Scuba diving where the diver is intentionally transported by the water flow; Inland diving – Diving in waters inland of the coastal high water mark. Reef diving – Recreational diving on a reef Artificial reef – Human-made underwater structure that functions as a reef
It is a non-profit, global organization with more than 1,300 members, which promotes scuba diving through consumer awareness programs and media campaigns such as the national Be a Diver campaign; diver retention initiatives such as DiveCaching; and an annual trade-only event for businesses in the scuba diving, action watersports and adventure ...
A lifting bag is an item of diving equipment consisting of a robust and air-tight bag with straps, which is used to lift heavy objects underwater by means of the bag's buoyancy. The heavy object can either be moved horizontally underwater by the diver or sent unaccompanied to the surface. [1] Lift bag appropriate capacity should match the task ...
See: Scuba cylinder valve#Valve cage. Structure or frame fitted to scuba cylinder to protect the cylinder valve or manifold and regulator first stage from impact damage and roll-off. valve drill Safety exercise in which the diver shuts down, tests regulators and re-opens the manifold valves on a twin set in a specific order. valve guard
In flexible bag weights, the small pieces of lead shot will rub together when handled and used, releasing lead dust and corrosion products into the water. [32] The amount of lead lost to the water is roughly proportional to the total surface area of the weights, and the amount of motion between contact surfaces and is greater for smaller sizes ...
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