#122
captn_rob - 9/12/2017 10:03 AM
"Some divers, such as instructors, are effectively acting as self-sufficient divers because they dive with students who may not yet be capable of rescuing them.[5] Others, such as underwater photographers and videographers, dive solo as this allows them a greater opportunity to focus on capturing selected images and not having to rely on buddies to remain close at hand. Even those photographers or videographers who do dive with buddies are often effectively "same ocean" buddies, implying they may be far enough apart physically, or sufficiently focused on their camera-related tasks, to be ineffective as a designated dive buddy—just as if they were diving in the same ocean, but not together. This practice has led to many highly experienced underwater photographers diving solo, since they don’t commit to provide timely support to a buddy nor expect such support from a buddy.[4] Underwater hunters also often elect to dive solo in order to focus on their prey.

Solo diving, once considered technical diving and discouraged by most recreational diver certification agencies as more dangerous than buddy diving, is now considered by many experienced divers and some certification agencies[1] to be an acceptable practice for suitably trained, equipped, and competent recreational divers,[6] and by some other agencies to be occasionally inevitable.[7] Rather than relying on the traditional buddy diving safety system, solo divers are self-sufficient and willing to take responsibility for their own safety while diving.[5][1] The first training agency to offer a Solo Diving certification was Scuba Diving International (SDI) in 1999. In 2011, the Professional Association of Diving Instructors (PADI) started offering a solo specialty called "Self-Reliant Diver",[8] which in many respects (entry requirements, for example) is very similar to the course offered by SDI."

en.wikipedia.org/wiki/Solo_diving#Reasons_for_solo_scuba_diving