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Underwater diving is the practice of descending below the water's surface to conduct underwater activities. In ambient pressure diving, the diver is exposed to the pressure of the surrounding water, and uses breathing apparatus for scuba diving or surface supplied diving, or when freediving, will breath-hold. The saturation diving technique reduces the risk of decompression sickness after long duration deep dives.
Deep Diving Courses. The Advanced Open Water course includes a deep dive to 100 feet / 30 meters. Afterwards divers are able to complete a course in Deep Diving. This specialty course involved four dives of between 60 feet / 18 meters and 140 feet / 40 meters.