Decompression sickness DCS, and there is some evidence that marine mammals such as cetaceans and seals may also be affected. AW Carlsen has suggested that the presence of a right-left shunt in the reptilian heart may account for the predisposition in the same way as a patent foramen ovale does in humans. Decompression sickness Decompression sickness (DCS; also known as divers' disease, the bends, aerobullosis, 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
Scuba Schools International Assistant Instructor) followed by Open Water Instructor and above. SSI's training program for children aged 8–12 years is called Scuba Rangers. The training program for technical divers is called TechXR (Technical Extended Range) and includes decompression diving, trimix and other courses that exceed the limit for recreational divers. SSI scuba certifications are recognized throughout the world (such as RSTC - Recreational Scuba Training Council, EUF - European Underwater Federation, CUA - China Underwater Association and others). SSI was founded by Robert Clark in 1970, and was one of the pioneers of professional scuba training. They were the first organization to