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Imagine a dive where you can spend as long you want underwater without worrying about running out of something to breath.
Recreational and technical divers alike are discovering the benefits of diving with rebreathers. All divers benefit from a system that makes the underwater experience safer and more enjoyable.
Rebreathers are ideal for marine biologists, underwater photographers, videographers, technical divers or simply anyone who wants to evolve or try something different.
The principle
A diver only uses a small fraction of the oxygen inhaled in each breath; most of the oxygen is wasted along with other gases in the form of bubbles in our exhaled breath. As the depth of the dive increases more gas molecules are lost with each breath. A rebreather retains most or all of the exhaled breath, processes it and returns it to the diver to breath again. Thus the deeper the dive the more advantageous rebreathers become.
Physiological advantage
Carbon dioxide exhaled into the rebreather is chemically absorbed by a scrubber unit, which releases heat and moisture as part of the reaction process. This warm moist air is not only more pleasant to breathe, it also keeps you warmer during long dives and helps prevent dehydration.
An additional advantage is decompression optimization (less nitrogen absorbed during the dive). A closed-circuit rebreather maintains the concentration of oxygen in the breathing gas at it optimal safe value throughout the duration of the dive. This means that the inert gas (nitrogen) within the breathing loop is kept to a minimum. A diver can therefore stay longer at depth without incurring a decompression obligation, and when a decompression process is incurred the decompression process is significantly faster.
No bubbles
Underwater videographers and photographers have long known that the best way to get closer to marine life is to make as little noise as possible. With each exhalation a diver using conventional scuba equipment releases a large burst of noisy bubbles. Fish and other marine life behave warily and are reluctant to allow divers to approach. Semi-closed rebreathers reduce the volume of exhaled bubbles, closed-circuit rebreathers eliminate bubbles entirely. With rebreathers divers are able to approach marine life much more closely without disturbing their natural behaviour.
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