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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.
FREEDIVING ACCIDENT STATISTICS. Breath-hold diving â commonly known as freediving- an in-water activity with a mask but without the use of scuba or surface-supply breathing gas, has grown in popularity as an underwater activity with numerous sub-disciplines. While generally safe, the aquatic realm is unforgiving and serious injury or death can occur. Learning from freediving accidents is important to increase diver awareness and promote safety. Methods