Technical Diving Poses Special Risks, Challenges

Technical diving is a step beyond recreational diving that demands specialized training and skills. Technical diving also poses more risks and challenges for the scuba diver.
So what is technical diving? It often is defined as deep-water diving that requires decompression stops and special breathing mixes.
Technical dives are done at depths greater than 130 feet or in areas, such as caves, that have no direct access to the surface.
Technical divers have so-called controlled ascents after a dive, in order to make decompression stops along the way. The stops allow dissolved gases to be released gradually from the body and prevent decompression sickness, or the bends.