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Diving under a physical barrier to a direct vertical ascent to the surface
the mode is chosen to suit the specific circumstances. Penetration diving is also known as diving in overhead environments, which is a class of confinement
Penetration_diving
Recreational diving on wrecks
wreck diving. The recreation of wreck diving makes no distinction as to how the vessel ended up on the bottom. Some wreck diving involves penetration of
Wreck_diving
Diving in water-filled caves
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
Cave_diving
Diving beyond the scope of recreational diving
Technical diving (also referred to as tec diving or tech diving) is scuba diving that exceeds the agency-specified limits of recreational diving for non-professional
Technical_diving
Diving using equipment configuration where scuba sets are clipped to the diver's sides
wreck diving penetrations. Sidemount diving is now growing in popularity within the technical diving community for general decompression diving, and is
Sidemount_diving
Diving incident in the Maldives
The 2026 Dhekunu Kandu cave diving incident was a cave diving incident that occurred on May 14th, 2026 at the Dhekunu Kandu cave, also known as the Devana
2026 Dhekunu Kandu cave diving incident
2026_Dhekunu_Kandu_cave_diving_incident
Techniques requiring specific equipment and procedures
A mode of diving, or diving mode, is a particular way to dive underwater that requires specific equipment, procedures and techniques, and may expose the
Modes_of_underwater_diving
Japanese pearl divers
occupation. ama (海女) – a sea-diving fisherwoman ama (海士) – a sea-diving fisherman ama (海人), kaijin (海人) – a sea-diving fisherperson of either gender
Ama_(diving)
Australian conservationist (1962–2006)
diving Penetration diving Cave diving Torricellian chamber Ice diving Wreck diving Recreational dive sites Underwater environment Underwater diving environment
Steve_Irwin
Container to supply high pressure gas for diving operations
A diving cylinder or diving gas cylinder is a gas cylinder used to store and transport high-pressure gas used in diving operations. This may be breathing
Diving_cylinder
Equipment used to facilitate underwater diving
Diving equipment, or underwater diving equipment, is equipment used by underwater divers to make diving activities possible, easier, safer and/or more
Diving_equipment
Physiological responses to immersion of air-breathing vertebrates
The diving reflex, also known as the diving response and mammalian diving reflex, is a set of physiological responses to immersion that overrides the
Diving_reflex
Variety of environments that people may dive in
during the dive. Outfall – Discharge point of a drain or waste stream into a body of water Penetration diving, also known as Overhead diving – Diving under
List of diving environments by type
List_of_diving_environments_by_type
Underwater diving without breathing apparatus
Freediving, free-diving, free diving, or breath-hold diving is a mode of underwater diving that relies on breath-holding (apnea) until resurfacing rather
Freediving
Underwater diving under ice
Ice diving is a type of penetration diving where the dive takes place under ice. Because diving under ice places the diver in an overhead environment
Ice_diving
Articulated pressure-resistant anthropomorphic housing for an underwater diver
An atmospheric diving suit (ADS), atmospheric pressure diving suit or single atmosphere diving suit is a small one-person articulated submersible which
Atmospheric_diving_suit
Underwater diving to a depth beyond the norm
Deep diving is underwater diving to a depth beyond the normal range accepted by the associated community. In some cases this is a prescribed limit established
Deep_diving
Chamber for transporting divers vertically through the water
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
Diving_bell
Semi-submersible offshore drilling rig
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
Byford_Dolphin
English broadcaster and natural historian (born 1926)
on-screen presenter due to difficulties in speaking to a camera through diving apparatus, but asked Attenborough to narrate the films. The same team reunited
David_Attenborough
British ocean liner (1907–1915)
from the Discovery Channel was also to be on hand. A dive team from Cork Sub Aqua Club, diving under licence, discovered 15,000 rounds of the .303 (7
RMS_Lusitania
Practice of mutual monitoring and assistance between two divers
diving is intended to enhance the safety of scuba diving by having two or three competent divers acting as safety divers for each other during a dive
Buddy_diving
Line deployed by scuba divers for navigation
difficult. They are often used in cave diving and wreck diving where the diver must return to open water after a penetration when it may be difficult to discern
Distance_line
British science fiction writer (1917–2008)
writing, Clarke set up several diving-related ventures with his business partner Mike Wilson. In 1956, while scuba diving, Wilson and Clarke uncovered ruined
Arthur_C._Clarke
Special forces unit of the British Army
following year it was decided there was a need for a long-term deep-penetration commando unit and a new SAS regiment was to be raised as part of the
Special_Air_Service
Swimming underwater, breathing gas carried by the diver
Scuba diving is an underwater diving mode where divers use breathing equipment completely independent of a surface breathing gas supply, and therefore
Scuba_diving
Disorder caused by dissolved gases forming bubbles in tissues
Navy Diving Manual indicates that ascent rates greater than about 20 m/min (66 ft/min) when diving increase the chance of DCS, while recreational dive tables
Decompression_sickness
USMC deep reconnaissance unit
its heliborne and aircraft wing assets to add 'deeper' reconnaissance penetration capabilities. This new-found capability gave reconnaissance Marines the
United States Marine Corps Force Reconnaissance
United_States_Marine_Corps_Force_Reconnaissance
Copper helmet with rubberised canvas diving suit and weighted boots
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
Standard_diving_dress
Pressure reduction and its effects during ascent from depth
atmospheric pressure when free-diving or snorkelling will not usually need to decompress. Divers using an atmospheric diving suit do not need to decompress
Decompression_(diving)
U.S. Navy's special operations force
transitioned from the combat fatigues of the NCDUs to trunks, swimfins, diving masks and Ka-bars. The men trained by the OSS had brought their swimfins
United_States_Navy_SEALs
Ballast carried to counteract buoyancy
A diving weighting system is ballast weight added to a diver or diving equipment to counteract excess buoyancy. They may be used by divers or on equipment
Diving_weighting_system
Garment or device designed to protect a diver from the underwater environment
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
Diving_suit
Diving mode and decompression technique
Saturation diving is an ambient pressure diving technique which allows a diver to remain at working depth for extended periods during which the body tissues
Saturation_diving
Mechanism that controls the pressure of a breathing gas supply for diving
A diving regulator or underwater diving regulator is a pressure regulator that controls the pressure of breathing gas for underwater diving. The most
Diving_regulator
Diving for the purpose of leisure and enjoyment
Recreational diving or sport diving is diving for the purpose of leisure and enjoyment, usually when using scuba equipment. The term "recreational diving" may
Recreational_diving
German filmmaker (1902–2003)
motion shots. Riefenstahl played with the idea of slow motion, underwater diving shots, extremely high and low shooting angles, panoramic aerial shots, and
Leni_Riefenstahl
Tactical scuba diver
call themselves "combat divers" or similar. Tactical diving is a branch of professional diving carried out by armed forces and tactical units. They may
Frogman
American engineer, vintner, and former NASA astronaut
diving Penetration diving Cave diving Torricellian chamber Ice diving Wreck diving Recreational dive sites Underwater environment Underwater diving environment
José_M._Hernández
Origins and development of diving using breathing gas carried by the diver
The history of scuba diving is closely linked with the history of diving equipment. By the turn of the twentieth century, two basic architectures for
History_of_scuba_diving
Severely deficient supply of oxygen
Orme, Brown, Green & Longman. Elsner R (September 1989). "Perspectives in diving and asphyxia". Undersea Biomedical Research. 16 (5): 339–44. PMID 2678664
Asphyxia
2018 international rescue mission in Thailand
diving school in Phuket, contributed in cave diving capacity. Canada: Erik Brown, a dive instructor from Vancouver, participated on the cave diving team
Tham_Luang_cave_rescue
Rigid head enclosure for underwater diving
A diving helmet is a rigid head enclosure with a breathing gas supply used in underwater diving. They are worn mainly by professional divers engaged in
Diving_helmet
Boat used for the support of scuba diving operations
live-boat diving). There are a range of specialised procedures for boat diving, which include water entry and exit, avoiding injury by the dive boat, and
Dive_boat
Descending below the surface of the water to interact with the environment
diver may dive on breath-hold (freediving) or use breathing apparatus for scuba diving or surface-supplied diving, and the saturation diving technique
Underwater_diving
Influences of the underwater environment on the physiology of human divers
exists in other mammals, including humans. Diving birds, such as penguins, have a similar diving reflex. The diving reflex is triggered specifically by chilling
Human physiology of underwater diving
Human_physiology_of_underwater_diving
Equipment used specifically for surface supplied diving
Surface-supplied diving equipment (SSDE) is the equipment required for surface-supplied diving. The essential aspect of surface-supplied diving is that breathing
Surface-supplied diving equipment
Surface-supplied_diving_equipment
Underwater diving breathing gas supplied from the surface
Surface-supplied diving is a mode of underwater diving using equipment supplied with breathing gas through a diver's umbilical from the surface, either
Surface-supplied_diving
Underwater diving using self contained breathing gas recycling apparatus
Rebreather diving is underwater diving using diving rebreathers, a class of underwater breathing apparatus which recirculates the breathing gas exhaled
Rebreather_diving
Recreational diver training and certification agency
The Professional Association of Diving Instructors (PADI) is a recreational diving membership and diver training organization founded in 1966 by John Cronin
Professional Association of Diving Instructors
Professional_Association_of_Diving_Instructors
Hyperbaric pressure vessel for human occupancy used in diving operations
atmospheric pressure are provided for diving-related applications such as saturation diving and diver decompression, and non-diving medical applications such as
Diving_chamber
Recreational diving without a dive buddy
Solo diving is the practice of self-sufficient underwater diving without a "dive buddy", particularly with reference to scuba diving, but the term is
Solo_diving
Facility for supporting saturation diving projects
A saturation diving system is the combined and installed equipment required to support a saturation diving operation. It may be an underwater habitat
Saturation_diving_system
British volunteer cave rescue diver
of his own diving equipment, and has been called a "technical guru." He designed a mapping device that collects information while diving. He also designs
John_Volanthen
French oceanographer and author (1910–1997)
autonomous diving, opening the way for scientific underwater archaeology. Cousteau and Marcel Ichac brought back from there the Carnets diving film (presented
Jacques_Cousteau
Instrument to calculate decompression status in real time
diving operations. There is no reason to assume that they cannot be valuable tools for commercial diving operations, especially on multi-level dives.
Dive_computer
Organ system for circulating blood in animals
diving Penetration diving Cave diving Torricellian chamber Ice diving Wreck diving Recreational dive sites Underwater environment Underwater diving environment
Circulatory_system
Light used underwater by a diver
case the primary light fails during the dive. This is particularly important in cave and wreck penetration diving, where the light is required to facilitate
Dive_light
Professional diving on industrial projects
Commercial diving may be considered an application of professional diving where the diver engages in underwater work for industrial, construction, engineering
Commercial_diving
Watch designed for underwater diving
A diving watch, also commonly referred to as a diver's or dive watch, is a watch designed for underwater diving that features, as a minimum, a water resistance
Diving_watch
Medical fitness to function underwater
person's psychological suitability for diving and has no reference to their diving skills. A certification of fitness to dive is generally for a specified period
Fitness_to_dive
2006 animal encounter accident
diving Penetration diving Cave diving Torricellian chamber Ice diving Wreck diving Recreational dive sites Underwater environment Underwater diving environment
Death_of_Steve_Irwin
Fatal offshore diving accident in Scotland, 1979
routine dive in the East Shetland Basin of the North Sea, the diving bell of the diving support vessel MS Wildrake became separated from its main lift
Wildrake_diving_accident
Technical diving safety philosophy
(DIR) is a holistic approach to scuba diving that encompasses several essential elements, including fundamental diving skills, teamwork, physical fitness
Doing_It_Right_(scuba_diving)
Equipment for controlling the buoyancy of a diver
inflatable goods Low impact diving – Scuba diving that has minimal environmental effect Scuba skills – Skills required to scuba-dive safely There are other
Buoyancy_compensator_(diving)
Diving unit of the Royal Australian Navy
Clearance Diving Branch is the specialist diving unit of the Royal Australian Navy (RAN) whose versatile role covers all spheres of military diving, and includes
Clearance_Diving_Branch_(RAN)
Pirate Blackbeard's ship
Southerly, C.; Gillman-Bryan, J. (2003). "Diving on the Queen Anne's Revenge". In Norton, S. F. (ed.). Diving for Science. American Academy of Underwater
Queen_Anne's_Revenge
Techniques and procedures for safe decompression of divers
technical diving part 2: decompression from deep technical dives". Diving and Hyperbaric Medicine. 43 (2): 96–104. PMID 23813463. "How to Switch Your Diving Gas
Decompression_practice
English Tudor warship (1511–1545)
base and conservation facilities. During the four diving seasons from 1979 to 1982 over 22,000 diving hours were spent on the site, an effort that amounted
Mary_Rose
American cave and deep diving pioneer and record breaker
regarded as one of the pioneers of cave diving, and he wrote two major books on the subject: Basic Cave Diving: A Blueprint for Survival and Caverns Measureless
Sheck_Exley
Ship used as a floating base for professional diving projects
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
Diving_support_vessel
American engineer, astronaut, and naval aviator (born 1964)
4 mi offshore from Key Largo. The NEEMO 4 crew spent five days saturation diving from Aquarius as a space analog for working and training under extreme environmental
Scott_Kelly_(astronaut)
Diagnosis, treatment and prevention of disorders caused by underwater diving
significant diving-related illnesses, decompression sickness and arterial gas embolism. Diving medicine deals with medical research on issues of diving, the
Diving_medicine
British cave diver who specialises in rescues
cave diving to a television programme he watched as a teenager, The Underground Eiger, saying, "After watching it, I just knew that cave-diving was for
Rick_Stanton
Closed or semi-closed circuit scuba
technical diving decompression computers for rebreather diving, and some rebreather manufacturers use dive computer hardware repackaged by dive computer
Diving_rebreather
Industry based on recreational diver travel
Some wreck diving involves penetration of the wreckage, making a direct ascent to the surface impossible for a part of the dive. Wreck diving may be divided
Scuba_diving_tourism
Set of detailed instructions to assist in workplace safety
Underwater diving Diving activities Diving modes Atmospheric pressure diving Freediving Saturation diving Scuba diving Snorkeling Surface oriented diving Surface-supplied
Standard_operating_procedure
Diving with access to breathable air of the atmosphere
overhead environments, and diving in these is called Penetration diving. This may involve entering caves or wrecks, or diving under ice or the hull of a
Open-water_diving
Underwater diving where divers are paid for their work
Professional diving is underwater diving where the divers are paid for their work. Occupational diving has a similar meaning and applications. The procedures
Professional_diving
Powered device for diver mobility and range extension
decompression obligation, which depend on the dive profile. Typical uses include cave diving and technical diving where the vehicles help move bulky equipment
Diver_propulsion_vehicle
Scuttling old ships to produce artificial reefs
Sinking ships for wreck diving sites is the practice of scuttling old ships to produce artificial reefs suitable for wreck diving, to benefit from commercial
Sinking ships for wreck diving sites
Sinking_ships_for_wreck_diving_sites
Influence of the interaction between the user and the equipment on design
factors in diving equipment design is the application of human factors and ergonomics principles and data to the design of diving equipment and diving support
Human factors in diving equipment design
Human_factors_in_diving_equipment_design
American novelist and underwater explorer (1931–2020)
diving Penetration diving Cave diving Torricellian chamber Ice diving Wreck diving Recreational dive sites Underwater environment Underwater diving environment
Clive_Cussler
Developments over time in the human activity
times commercial applications such as sponge diving and marine salvage were established. Military diving also has a long history, going back at least
History_of_underwater_diving
Medical condition of lack of oxygen in the tissues
diving to have a dynamically controlled oxygen partial pressure, known as a set point, which is maintained in the breathing gas circuit of a diving rebreather
Hypoxia_(medicine)
Submersible that traveled to the Challenger Deep
developer team members hail from Sydney's cave-diving fraternity including Allum himself with many years of cave-diving experience.[citation needed] Working in
Deepsea_Challenger
Branch of professional diving carried out by police services
diving, and penetration diving. In the US, diving training agencies such as Emergency Response Diving International (ERDI), Special Response Diving International
Police_diving
Underwater environment to which a diver may be exposed
The underwater diving environment, or just diving environment is the natural or artificial surroundings in which a dive is done. It is usually underwater
Underwater_diving_environment
Irish safety freediver (1977-2017)
Andrukajtis, Tomasz (2017-07-23). "Freediver Stephen Keenan Died While Diving In Dahab - DIVERS24.COM". Retrieved 2023-10-27. Feehan, Conor (2017-07-25)
Stephen_Keenan
Group of people working together to enhance dive safety and achieve a task
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
Diving_team
Equipment used by divers to facilitate decompression
deep diving without using dive tables, decompression software or a dive computer. It is generally taught as part of the "DIR" philosophy of diving promoted
Decompression_equipment
Crewed full ocean depth rated submersible
Challenger Deep Timeline of diving technology – Chronological list of notable events in the history of underwater diving equipment Struwe, Jonathan (2019-05-04)
DSV_Limiting_Factor
Risk management of underwater diving activities
Diving safety is the aspect of underwater diving operations and activities concerned with the safety of the participants. The safety of underwater diving
Diving_safety
Toxic effects of breathing oxygen at high partial pressures
atmosphere (atm) is 1.013 bars. NOAA Diving Program (U.S.) (2001). Joiner, James T. (ed.). NOAA Diving Manual, Diving for Science and Technology (4th ed
Oxygen_toxicity
Agents and situations that pose a threat to the underwater diver
accident. Diving support infrastructure for recreational diving includes dive buddies, charter boats, dive shops, schools etc. Professional diving support
Diving_hazards
Diving mask that covers the mouth as well as the eyes and nose
A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece, demand valve or constant
Full-face_diving_mask
Diving equipment, or underwater diving equipment, is equipment used by underwater divers to make diving activities possible, easier, safer and/or more
List of diving equipment manufacturers
List_of_diving_equipment_manufacturers
Injury due to pressure difference between gas filled space and adjoining tissue
(the under-pressure air space is inside the diving mask or swimming goggles) Skin (when wearing a diving suit which creates an air space) Brain and cranium
Barotrauma
Australian technical diver (1954–2005)
Steven Shaw and Lisa (née Shaw) Moyers. "Deep Cave Diving with Dave Shaw". Deep Cave. "Scuba Diving World Records - Deepest Longest - Dave Shaw - Nuno
Dave_Shaw
Australian anesthesiologist and cave diver
anaesthetist in 2022. Harris began scuba diving in 1979 when he was 15 years old and began cave diving around 1985. His cave diving experiences include leading the
Richard_Harris_(anaesthetist)
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