LYCOS RETRIEVER 
Diving: Air
built 252 days ago
For some diving, gas mixtures other than normal atmospheric air (21% oxygen, 78% nitrogen, 1% other) can be used, so long as the diver is properly trained in their use. The most commonly used mixture is Enriched Air Nitrox, which is air with extra oxygen, often with 32% or 36% oxygen, and ... less nitrogen, reducing the likelihood of decompression sickness.
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Brownie’s custom designs each Nitrox Maker™ to accommodate personal diving needs and the vessel’s available space. Many existing air compressor systems can be upgraded to include a Nitrox Maker™, offering the numerous benefits of diving Nitrox, without the need to invest in a new air compressor. Brownie’s ... offers a full line of air compressors systems that can be upgraded to include the Nitrox Maker™.
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Good news for wreck diving fans - a new wreck will soon be sunk off the coasts of Key West, Florida. The wreck of a US Air Force missile tracking ship, the General Hoyt S. Vandenberg will be scuttled on May 15 in the Florida Keys National Marine Sanctuary.
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Brownie’s will ... include additional gas storage and mixing systems beyond air and Nitrox to support technical diving activities. Complex gas blending is possible with this setup because of a Trimix control panel piped to a 16-cylinder helium storage rack. This system will be capable of filling two tanks with custom gas mixtures simultaneously.
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It is known among air-breathing diving animals that heavier species can dive longer on average (see figure below). Reptiles are exceptional since their low oxygen consumption rate allows them to dive much longer than mammals or birds of the same body mass. Using the graph below, it is possible to estimate the average diving duration of a given mammal or bird from their body mass. We can use the same relationship to estimate at least how long a given ichthyosaur could stay submerged. This assumes the physiology of mammals and birds for ichthyosaurs, but it is ok since assuming a reptilian physiology would give much longer diving duration.
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While not a particularly popular participant sport, diving is one of the more popular Olympic sports with spectators. Successful competitors possess many of the same characteristics as gymnasts and competitive cheerleaders, including strength, flexibility, kinaesthetic judgment and air awareness.
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