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Dive RAID International (formerly RAID) is a dive training organization which was founded in 2007 to support diver training for the Poseidon Mk VI Discovery Rebreather.It has since extended its scope to include open circuit scuba training and training for both recreational and technical diving sectors as well as snorkeling and freediving.
The National Association of Underwater Instructors (NAUI Worldwide) is a nonprofit association of scuba instructors founded in 1960 by Albert Tillman and Neal Hess. [2] [3]NAUI primarily serves as a recreational dive certification and membership organization, providing international diver standards and education programs.
A snorkel is used to allow the user to breathe atmospheric air when their face is immersed in water while swimming or floating at the surface. [1] To work effectively, the snorkel must allow the user to inhale and exhale comfortably over an extended period, and provide a sufficient volume of air with appropriate oxygen and carbon dioxide content to maintain a sufficient and comfortable ...
SSI was founded by Robert Clark in 1970. [2] SSI headquarters was in Fort Collins, Colorado, and it is owned by Concept Systems International, Inc.In 2008, it was acquired by Doug McNeese, owner of the National Association of Scuba Diving Schools (USA) until its merger with SSI in 1999, and Robert Stoss, manager of Scubapro and Seemann Sub.
Snorkeling is an activity in its own right, as well as an adjunct to other activities, such as breath-hold diving, spearfishing and scuba diving, [27] and several competitive underwater sports, such as underwater hockey and finswimming. In all cases, the use of a snorkel facilitates breathing while swimming at the surface and observing what is ...
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Technical diver during a decompression stop. There is some professional disagreement as to what exactly technical diving encompasses. [9] [10] [11] Nitrox diving and rebreather diving were originally considered technical, but this is no longer universally the case as several certification agencies now offer Recreational Nitrox and recreational rebreather training and certification.
Oil prices bounced around quite a bit in 2024. They rallied more than 20% at one point -- topping $85 per barrel -- before cooling off toward the end of the year. Oil was recently below $70 a ...
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