Underwater photography is done by recreational and professional divers.
Diving activities are the things people do while diving underwater. People may dive for various reasons, both personal and professional. While a newly qualified recreational diver may dive purely for the experience of diving, most divers have some additional reason for being underwater. Recreational diving is purely for enjoyment and has several specialisations and technical disciplines to provide more scope for varied activities for which specialist training can be offered, such as cave diving, wreck diving, ice diving and deep diving.[1][2] Several underwater sports are available for exercise and competition.[3]
There are various aspects of professional diving that range from part-time work to lifelong careers. Professionals in the recreational diving industry include instructor trainers, diving instructors, assistant instructors, divemasters, dive guides, and scuba technicians. A scuba diving tourism industry has developed to service recreational diving in regions with popular dive sites. Commercial diving is industry related and includes civil engineering tasks such as in oil exploration, offshore construction, dam maintenance and harbour works. Commercial divers may also be employed to perform tasks related to marine activities, such as naval diving, ships husbandry, marine salvage or aquaculture.[4][5][6] Other specialist areas of diving include military diving, with a long history of military frogmen in various roles. They can perform roles including direct combat, reconnaissance, infiltration behind enemy lines, placing mines, bomb disposal or engineering operations.[7]
In civilian operations, police diving units perform search and rescue operations, and recover evidence. In some cases diver rescue teams may also be part of a fire department, paramedical service, sea rescue or lifeguard unit, and this may be classed as public safety diving.[8][9] There are also professional media divers such as underwater photographers and videographers, who record the underwater world, and scientific divers in fields of study which involve the underwater environment, including marine biologists, geologists, hydrologists, oceanographers and underwater archaeologists.[10][6][11]
The choice between scuba and surface-supplied diving equipment is based on both legal and logistical constraints. Where the diver requires mobility and a large range of movement, scuba is usually the choice if safety and legal constraints allow. Higher risk work, particularly commercial diving, may be restricted to surface-supplied equipment by legislation and codes of practice.[12][11][13]
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^US Navy Diving Manual (2006), Chapter 1 History of Diving.
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^NOAA Diving Manual (2001), Chapter 1 History of Diving and NOAA Contributions.
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DivingactivitiesDivingactivities are the things people do while diving underwater. People may dive for various reasons, both personal and professional...
diver may dive on breath-hold (freediving) or use breathing apparatus for scuba diving or surface-supplied diving, and the saturation diving technique...
Recreational diving or sport diving is diving for the purpose of leisure and enjoyment, usually when using scuba equipment. The term "recreational diving" may...
A diving team is a group of people who work together to conduct a diving operation. A characteristic of professional diving is the specification for minimum...
Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface breathing gas supply, and...
Professional diving is underwater diving where the divers are paid for their work. Occupational diving has a similar meaning and applications. The procedures...
Diving equipment, or underwater diving equipment, is equipment used by underwater divers to make divingactivities possible, easier, safer and/or more...
Freediving, free-diving, free diving, breath-hold diving, or skin diving, is a mode of underwater diving that relies on breath-holding until resurfacing...
A diving support vessel is a ship that is used as a floating base for professional diving projects. Basic requirements are the ability to keep station...
Sea, four divers were in a diving chamber system on the rig's deck that was connected by a trunk (a short passage) to a diving bell. The divers were Edwin...
as an overview of and topical guide to underwater diving: Underwater diving – as a human activity, is the practice of descending below the water's surface...
Cave-diving is underwater diving in water-filled caves. It may be done as an extreme sport, a way of exploring flooded caves for scientific investigation...
underwater divingactivities listed by region. Some legislation affects only professional diving, other may affect only recreational diving, or all diving activities...
A diving suit is a garment or device designed to protect a diver from the underwater environment. A diving suit may also incorporate a breathing gas supply...
The diving reflex, also known as the diving response and mammalian diving reflex, is a set of physiological responses to immersion that overrides the...
2012–3021. Retrieved January 17, 2013. Hoffman, RJ (1988). Chronology of DivingActivities and Underground Surveys in Devils Hole and Devils Hole Cave, Nye County...
technical divingactivities such as cave diving, threesomes are considered an acceptable practice. This is usually referred to as team diving to distinguish...
Standard diving dress, also known as hard-hat or copper hat equipment, deep sea diving suit or heavy gear, is a type of diving suit that was formerly...
Diving bells are usually suspended by a cable, and lifted and lowered by a winch from a surface support platform. Unlike a submersible, the diving bell...
significant diving-related illnesses, decompression sickness and arterial gas embolism. Diving medicine deals with medical research on issues of diving, the...
Diving safety is the aspect of underwater diving operations and activities concerned with the safety of the participants. The safety of underwater diving...
Solo diving is the practice of self-sufficient underwater diving without a "dive buddy", particularly with reference to scuba diving, but the term is...
Diving support equipment is the equipment used to facilitate a diving operation. It is either not taken into the water during the dive, such as the gas...
safety of breathable atmosphere at the surface. Cave diving, wreck diving, ice diving and diving inside or under other natural or artificial underwater...
Deep diving is underwater diving to a depth beyond the norm accepted by the associated community. In some cases this is a prescribed limit established...
Saturation diving is diving for periods long enough to bring all tissues into equilibrium with the partial pressures of the inert components of the breathing...
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