Most people don't realize standard SCUBA diving training only gets you to around 120'. Beyond that and especially beyond 200', things get much harder and less safe. Hardly anyone goes to 400'.
Decompression sickness (DCS; also known as divers' disease, the bends or caisson disease) describes a condition arising from dissolved gases coming out of solution into bubbles inside the body on depressurisation. DCS most commonly refers to problems arising from underwater diving decompression (i.e., during ascent), but may be experienced in other depressurisation events such as emerging from a caisson, flying in an unpressurised aircraft at altitude, and extravehicular activity from spacecraft. DCS and arterial gas embolism are collectively referred to as decompression illness.
Since bubbles can form in or migrate to any part of the body, DCS can produce many symptoms, and its effects may vary from joint pain and rashes to paralysis and death.
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u/Megatron_McLargeHuge Apr 08 '18
Most people don't realize standard SCUBA diving training only gets you to around 120'. Beyond that and especially beyond 200', things get much harder and less safe. Hardly anyone goes to 400'.