Job safety analysis

Short description: Procedure to integrate safety practices into a particular task

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A job safety analysis (JSA) is a procedure that helps integrate accepted safety and health principles and practices into a particular task or job operation. The goal of a JSA is to identify potential hazards of a specific role and recommend procedures to control or prevent these hazards.

Other terms often used to describe this procedure are job hazard analysis (JHA), hazardous task analysis (HTA) and job hazard breakdown.

The terms "job" and "task" are commonly used interchangeably to mean a specific work assignment. Examples of work assignments include "operating a grinder," "using a pressurized water extinguisher" or "changing a flat tire." Each of these tasks have different safety hazards that can be highlighted and fixed by using the job safety analysis.

## Contents

* 1 Terminology and definitions
* 2 Hazard controls
* 2.1 Control effectiveness criteria
* 2.2 Hierarchy of controls
* 3 Scope of application
* 4 Structure of a job safety analysis
* 4.1 Assessing risk levels
* 4.2 Identifying responsibilities
* 4.3 Application of the JSA
* 5 References

## Terminology and definitions

Workplace hazard categories

Workplace hazards can be allocated to six categories:[1]

* Safety hazards: Examples: spills, working from heights, confined spaces
* Biological hazards: Examples; bodily fluids, animal droppings, pathogens
* Physical hazards: Examples: radiation, extreme temperatures, loud noises
* Ergonomic hazards: Examples: awkward postures, incorrect lifting, vibration
* Chemical hazards: Examples: vapors and fumes, pesticides, flammable liquids
* Work organization hazards: Examples: workload demands, job stress, lack of respect

Mechanism of injury

Mechanism of injury (MOI) is the means by which an injury occurs.[2] It is important because in the absence of an MoI there is no hazard. Common mechanisms of injury are "slips, trips and falls", for example:

* Hazard: a tool bag obstructing a walkway (the tool bag of itself would not be a hazard, the bad placement is necessary to make it a hazard)
* Mechanism of injury: tripping over tool bag, falling onto hard surface.
* Injury: bone fracture

Other common mechanisms of injury include:[citation needed]

* Struck against or by
* Contact with or by
* Caught in, on, by or between
* Exposure to
* Fall to same or lower level

Likelihood

Likelihood is how often an event is reasonably and realistically expected to occur in a given time, and may be expressed as a probability, frequency or percentage.

Consequence
Consequence diagram

Consequence is the outcome of an event expressed qualitatively or quantitatively, being a loss, injury, disadvantage or gain. There may be a range of possible outcomes associated with an event.[3]

Consequence is the severity of the injury or harm that can be reasonably and realistically expected from exposure to the mechanism of injury of the hazard being rated. An implemented control may affect the severity of the injury, but it has no effect on the way the injury occurred. Therefore, when rating risk, the consequence remains the same for both the initial rating and the residual rating. People inherently tend to overestimate severity of consequence when rating risk,[3] but the rating should be both reasonable and realistic.

Risk

Risk is the combination of likelihood and consequence. The risk at hand ties directly into the likelihood and severity of an incident.

Risk authority

The risk authority is the organizational level of the person authorized to accept a specified level of risk. For example, different levels of risk authorities may be assigned as follows:

Risk level | Risk authority

|

Low risk | Supervisor
Moderate risk | Superintendent
Significant risk | Manager
High risk | Unacceptable without mitigation

"As low as reasonably practicable" (ALARP)
"As low as reasonably pracicable" (ALARP) carrot diagram

As low as reasonably practicable[4] when applied to job safety analysis means that it is not necessary to reduce risk beyond the point where the cost of further control becomes disproportionate to any achievable safety benefit. The "ALARA" acronym ("As low as reasonably achievable") is also in common usage.[5]

Reasonably practicable

In relation to a duty to ensure health and safety, reasonably practicable means that which is, or was at a particular time, reasonably able to be done to ensure health and safety, taking into account and weighing up all relevant matters including:[6]

* The likelihood of the hazard or the risk concerned occurring
* The degree of harm that might result from the hazard or the risk
* What the person concerned knows, or ought reasonably to know, about the hazard or risk, and about the ways of eliminating or minimizing the risk
* The availability and suitability of ways to eliminate or minimize the risk
* After assessing the extent of the risk and the available ways of eliminating or minimizing the risk, the cost associated with available ways of eliminating or minimizing the risk, including whether the cost is grossly disproportionate to the expected reduction of risk

Work process

The way in which work is performed is called the work process. This entails all actions taken to do a specific role in the workplace.

PEPE

PEPE is used to assist in identifying hazards. It is an acronym for the four elements that are present in every task of the work process:

* Process,
* Environment,
* People,
* EMT, which is itself an acronym for 'equipment, materials and tools'.

Process

In this context, process is about procedures, standards, legislation, safe work instructions, permits and permit systems, risk assessments and policies. Key factors for effective process are that the relevant components are in place, easy to follow and regularly reviewed and updated.

Environmental hazards

People may be exposed to issues related to:

* Access and egress
* Obstructions
* Weather
* Dust, heat, cold, noise
* Darkness
* Contaminants
* Isolated workers
* Other workers

Personnel hazards

To assist people to be safe in their workplace they need to be provided with sufficient information, training, instructions and supervision. People may be:

* Untrained
* Not yet competent
* Uncertified
* Inexperienced
* Unsupervised
* Affected by alcohol or other drugs
* Fatigued
* Inadequately instructed
* Suffering from stress from home life or workplace bullying
* Have a poor attitude to, or refuse to follow procedures

Equipment, materials and tools (EMT)

The right equipment, materials and tools must be selected for the task, and incorrect selections may be hazardous in themselves.

* The EMT may be hazardous, e.g. sharp, hot, vibrating, heavy, fragile, contain pinch points, a hazardous substance containing hydrocarbons, acids, alkalis, glues, solvents, asbestos, et cetera
* There may be a need for isolating personnel from energy sources such as electricity, hydraulic, pneumatic, radiation and gravitational sources
* Is the EMT in date? Does it require certification and/or calibration, tested and tagged?
* Obstructions should be kept out of walkways and leads and hoses suspended?

## Hazard controls

Controls are the barriers between people and/or assets and the hazards. Controls can also be thought of as "guardrails" that prevent negative impacts from occurring.

* A hard control provides a physical barrier between the person and the hazard. Hard controls include machine guards, restraint equipment, fencing/barricading.
* A soft control does not provide a physical barrier between the person and the hazard. Soft controls include signage, procedures, permits, verbal instructions etc.

### Control effectiveness criteria

The effectiveness of a control is measured by its ability to reduce the likelihood of a hazard causing injury or damage. A control is either effective or not.

To gauge this effectiveness several control criteria are used, which:[citation needed]

* Address the relevant aspects of process, environment, people, and equipment, materials and tools (PEPE),
* Reduce likelihood to as low as reasonably practicable (ALARP),
* Selected hard controls in preference to soft controls, and
* Contain a 'doing word'.

There is no commonly used mathematical way in which multiple controls for a single hazard can be combined to give a score that meets an organizations acceptable risk level. In instances where the residual risk is greater than the organisations acceptable risk level, consultation with the organizations relevant risk authority should occur.

### Hierarchy of controls

Hierarchy of controls

Hierarchy of control is a system used in industry to minimize or eliminate exposure to hazards.[7] It is a widely accepted system promoted by numerous safety organizations. This concept is taught to managers in industry, to be promoted as a standard practice in the workplace.[7] Various illustrations are used to depict this system, most commonly a triangle.[7]

The hierarchy of hazard controls are, in descending order of effectiveness: Elimination, substitution, engineering controls, administrative controls, and personal protective equipment.

## Scope of application

A job safety analysis is a documented risk assessment developed when company policy directs employees to do so. Workplace hazard identification and an assessment of those hazards may be required before every job.

Analyses are usually developed when directed to do so by a supervisor, when indicated by the use of a first tier risk assessment and when a hazard associated with a task has a likelihood rating of 'possible' or greater.

Generally, high consequence, high likelihood task hazards are addressed by way of a job safety analysis. These may include, but are not limited to, those with a history of, or potential for, injury, harm or damage such as those involving:

* Fire, chemicals or a toxic or oxygen deficient atmosphere
* Tasks carried out in new environments
* Rarely performed tasks
* Tasks that may impact on the integrity or output of a processing system

It is important that employees understand that it is not the JSA form that will keep them safe on the job, but rather the process it represents. It is of little value to identify hazards and devise controls if the controls are not put in place. Workers should never be tempted to "sign on" the bottom of a JSA without first reading and understanding it.

JSAs are quasi-legal documents, and are often used in incident investigations and court cases.

## Structure of a job safety analysis

The analysis is usually created by the work group who will perform the task. The more minds and experience applied to analysing the hazards in a job, the more successful the work group is likely to be in controlling them. Sometimes it is expedient to review a JSA that was prepared when the same task was performed on a previous occasion, but care should be taken to ensure that all of the hazards for the job are controlled for the new occasion. The JSA is usually recorded in a standardized tabular format with three to as many as five or six columns. The more columns used, the more in-depth the job safety analysis will be. The analysis is subjective to what the role being investigated entails. The headings of the three basic columns are: Job step, hazard and controls. A hazard is any factor that can cause damage to personnel, property or the environment (some companies include loss of production or downtime in the definition as well). A control is any process for controlling a hazard. The job is broken down into its component steps. Then, for each step, hazards are identified. Finally, for each hazard identified, controls are listed. In the example below, the hazards are analyzed for the task of erecting scaffolding and welding lifting lugs:

Job  | Hazard  | Control

|
|

Erecting scaffolding  | Falling scaffolding components  | Barricade work area while erecting and dismantling scaffolding
Working at height  | Verify scaffolder competence
Inspect scaffold components and structure
Tag scaffolding after approval
Wear appropriate protective equipment (harness, hard hats, safety footwear etc.)
Tether tools
Welding  | Electrical current  | Wear insulated gloves
Inspect cables, connections and tools before use
Welding fumes  | Ventilate using intrinsically safe fume extraction fans
Wear respiratory protection when appropriate
Welding arc  | Wear welding helmet with eye protection, fire resistant overalls, welding gloves and apron
Erect welding screens if appropriate
Hot weld metal, sparks and slag  | Remove all combustibles from work area
Lay out fireproof drop cloths.
Set up appropriate fire fighting equipment in work area
Maintain a fire watch during task plus 30 minutes.
Housekeeping  | Obstacles in work area  | Maintain a clear path work area
Remove unnecessary and vulnerable equipment
Display warning signage
Barricade danger areas

### Assessing risk levels

Some organizations add columns for risk levels. The risk rating of the hazard prior to applying the control is known as the 'inherent risk rating'. The risk rating of the hazard with the control in place is known as the 'residual' risk rating.

Risk, within the occupational health and safety sphere, is defined as the 'effect of uncertainties on objectives[8]'. In the context of rating a risk, it is the correlation of 'likelihood' and 'consequence', where likelihood is a quantitative evaluation of frequency of occurrences over time, and consequence is a qualitative evaluation of both the "Mechanism of Injury" and the reasonable and realistic estimate of "severity of injury".

Example:

There is historical precedent to reasonably and realistically evaluate that the likelihood of an adverse event occurring while operating a hot particle producing tool, (grinder), is "possible", therefore the activity of grinding meets the workplace hazard criteria.

It would also be reasonable and realistic to assume that the mechanism of injury of an eye being struck at high speed with hot metal particles may result in a permanent disability, whether it be the eye of the grinder operator, a crew member or any person passing or working adjacent to, above or below the grinding operation.

The severity of reasonably and realistically expected injury may be blindness. Therefore, grinding warrants a high severity rating.

Wearing eye protection while in the vicinity of grinding operations reduces the likelihood of this adverse event occurring.

If the eye protection was momentarily not used, not fitted correctly or failed and hot high speed particles struck an eye, the expected mechanism of injury (adverse event) has still occurred, hence the consequence rating remains the same for both the inherent and residual consequence rating.

It is accepted that the control may affect the severity of injury, however, the rated consequence remains the same as the effect is not predictable.

One of the known risk rating anomalies is that likelihood and the severity of injury can be scaled, but mechanism of injury cannot be scaled. This is the reason why the mechanism of injury is bundled with severity, to allow a rating to be given.[2] The MoI is an important factor as it suggests the obvious controls.

### Identifying responsibilities

Another column that is often added to a JSA form or worksheet is the Responsible column. The Responsible column is for the name of the individual who will put the particular control in place. Defining who is responsible for actually putting the controls in place that have been identified on the JSA worksheet ensures that an individual is accountable for doing so.

### Application of the JSA

After the JSA worksheet is completed, the work group that is about to perform the task would have a toolbox talk, to discuss the hazards and controls, delegate responsibilities, ensure that all equipment and personal protective equipment described in the JSA are available, that contingencies such as fire fighting are understood, communication channels and hand signals are agreed etc. Then, if everybody in the work group agrees that it is safe to proceed with the task, work can commence.

If at any time during the task circumstances change, then work should be stopped (sometimes called a "time-out for safety"), and the hazards and controls described in the JSA should be reassessed and additional controls used or alternative methods devised. Again, work should only continue when every member of the work group agrees it is safe to do so.

When the task is complete it is often of benefit to have a close-out or "tailgate" meeting, to discuss any lessons learned so that they may be incorporated into the JSA the next time the task is undertaken.

## References

1. ↑ OSHA. "Recommended Practices for Safety and Health Programs". https://www.osha.gov/safety-management/hazard-Identification#:~:text=Health hazards include chemical hazards,, repetitive motions, vibration)..
2. ↑ 2.0 2.1 Toney-Butler, Tammy J.; Varacallo, Matthew (2023), "Motor Vehicle Collisions", StatPearls (Treasure Island (FL): StatPearls Publishing), PMID 28722984, https://www.ncbi.nlm.nih.gov/books/NBK441955/, retrieved 2023-11-16
3. ↑ 3.0 3.1 AS/NZS4360:2009 Risk Management/year=2009, Australian Standards
4. ↑ Risk Management - Risk assessment techniques - International Standard IEC/ISO 31010, ISO, 2011, pp. 90
5. ↑ CDC (2022-05-18). "ALARA - As Low As Reasonably Achievable" (in en-us). https://www.cdc.gov/nceh/radiation/alara.html.
6. ↑ How to determine what is reasonably practicable to meet a health and safety duty - Guidance note - Safe Work Australia - May 2013
7. ↑ 7.0 7.1 7.2 "Hierarchy of Controls | NIOSH | CDC" (in en-us). 2023-01-17. https://www.cdc.gov/niosh/topics/hierarchy/default.html.
8. ↑ AS/NZS ISO 31000:2009 Risk management - Principles and guidelines. Standards Australia. 2009. pp. Preface (a). ISBN 978-0-7337-9289-2.

* v
* t
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Occupational safety and health

Occupational diseases
and injuries|

* Acrodynia
* Asbestosis
* Asthma
* Barotrauma
* Berylliosis
* Brucellosis
* Byssinosis ("brown lung")
* Chalicosis
* Chimney sweeps' carcinoma
* Chronic solvent-induced encephalopathy (CSE)
* Coalworker's pneumoconiosis ("black lung")
* Concussions in sport
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* Tennis elbow
* Tinnitus
* Writer's cramp

Occupational hygiene|

* Occupational hazard
* Biological hazard
* Chemical hazard
* Physical hazard
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* Hierarchy of hazard controls
* Prevention through design
* Exposure assessment
* Occupational exposure limit
* Occupational epidemiology
* Workplace health surveillance

Professions|

* Environmental health
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* Occupational health nursing
* Occupational health psychology
* Occupational medicine
* Occupational therapist
* Safety engineering

Agencies and organizations|

* Canadian Centre for Occupational Health and Safety
* European Agency for Safety and Health at Work
* UK Health and Safety Executive
* International Labour Organization
* U.S. National Institute for Occupational Safety and Health
* U.S. Occupational Safety and Health Administration
* World Health Organization

Standards|

* Bangladesh Accord
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* Occupational Safety and Health Convention, 1981
* Worker Protection Standard (US)
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Safety|

* Checklist
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* Personal protective equipment
* Job safety analysis
* Lockout-tagout
* Permit To Work
* Operations manual
* Redundancy (engineering)
* Risk assessment
* Safety culture
* Standard operating procedure

Legislation|

* Diving regulations

See also|

* Environment, health and safety
* Environmental toxicology
* Ergonomics
* Health physics
* Indoor air quality
* International Chemical Safety Card
* National Day of Mourning (Canadian observance)
* Process safety management
* Public health
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* Safety data sheet (SDS)
* Toxic tort
* Workers' compensation

* Category
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* e

Underwater diving

* Diving modes
* Atmospheric pressure diving
* Freediving
* Saturation diving
* Scuba diving
* Snorkeling
* Surface-supplied diving
* Unmanned diving

Diving equipment

| Basic equipment|

* Diving mask
* Snorkel
* Swimfin

|

Breathing gas|

* Bailout gas
* Bottom gas
* Breathing air
* Decompression gas
* Emergency gas supply
* Heliox
* Nitrox
* Oxygen
* Travel gas
* Trimix

Buoyancy and
trim equipment|

* Buoyancy control device
* Power inflator
* Dump valve
* Diving weighting system
* Ankle weights
* Integrated weights
* Trim weights
* Weight belt

Decompression
equipment|

* Decompression buoy
* Decompression cylinder
* Decompression trapeze
* Dive computer
* Diving shot
* Jonline

Environmental
protection|

* Atmospheric diving suit
* Diving suit
* Dry suit
* Sladen suit
* Standard diving suit
* Rash vest
* Wetsuit
* Dive skins
* Hot-water suit

Helmets
and masks|

* Anti-fog
* Diving helmet
* Free-flow helmet
* Lightweight demand helmet
* Reclaim helmet
* Standard diving helmet
* Diving mask
* Band mask
* Half mask
* Full-face mask

Instrumentation|

* Bottom timer
* Depth gauge
* Dive computer
* Dive timer
* Diving compass
* Diving watch
* Pneumofathometer
* Submersible pressure gauge

Mobility
equipment|

* Diving bell
* Closed bell
* Wet bell
* Diving stage
* Diver propulsion vehicle
* Advanced SEAL Delivery System
* Cosmos CE2F series
* Dry Combat Submersible
* Human torpedo
* Motorised Submersible Canoe
* R-2 Mala-class swimmer delivery vehicle
* SEAL Delivery Vehicle
* Shallow Water Combat Submersible
* Siluro San Bartolomeo
* Wet Nellie
* Wet sub
* Necker Nymph
* Swimfins
* Monofin
* Towboard

Safety
equipment|

* Alternative air source
* Bailout block
* Bailout bottle
* Bolt snap
* Buddy line
* Distance line
* Dive light
* Dive reel
* Diver's cutting tool
* Diver's knife
* Diver's telephone
* Through-water communications
* Diving bell
* Diving safety harness
* Emergency gas supply
* Lifeline
* Screw gate carabiner
* Line marker
* Octopus regulator
* Pony bottle
* Rescue tether
* Safety helmet
* Shark-proof cage
* Surface marker buoy
* Personal locator beacon

Underwater
breathing
apparatus|

* Atmospheric diving suit
* Diving cylinder
* Burst disc
* Diving cylinder valve
* Diving helmet
* Diving regulator
* Single-hose regulator
* Twin-hose regulator
* Regulator malfunction
* Regulator freeze
* Full face diving mask
* Reclaim helmet
* Open-circuit scuba
* Scuba set
* Bailout bottle
* Decompression cylinder
* Independent doubles
* Manifolded twin set
* Scuba manifold
* Pony bottle
* Sidemount
* Sling cylinder
* Scuba replacement
* Standard diving dress
* Diving rebreather
* Carbon dioxide scrubber
* Carleton CDBA
* CDLSE
* Cis-Lunar
* Cryogenic rebreather
* CUMA
* DSEA
* Dolphin
* Electro-galvanic oxygen sensor
* FROGS
* Halcyon PVR-BASC
* Halcyon RB80
* IDA71
* Interspiro DCSC
* KISS
* LAR-5
* LAR-6
* LAR-V
* LARU
* Porpoise
* Dräger Ray
* Siebe Gorman CDBA
* Siva
* Viper
* Surface-supplied diving equipment
* Air line
* Diver's umbilical
* Diving air compressor
* Hookah
* Sea Trek
* Snuba
* Standard diving dress

Diving
equipment
manufacturers|

* AP Diving
* Apeks
* Aqua Lung America
* Aqua Lung/La Spirotechnique
* Beuchat
* René Cavalero
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* Dacor
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* Dive Xtras
* Divex
* Diving Unlimited International
* Drägerwerk
* Fenzy
* Maurice Fernez
* Technisub
* Oscar Gugen
* Heinke
* HeinrichsWeikamp
* Johnson Outdoors
* Mares
* Morse Diving
* Nemrod
* Oceanic Worldwide
* Porpoise
* Sub Sea Systems
* Shearwater Research
* Siebe Gorman
* Submarine Products
* Suunto

Diving support equipment

| Breathing gas|

* Air filtration
* Booster pump
* Carbon dioxide scrubber
* Cascade filling system
* Diver's pump
* Diving air compressor
* Diving air filter
* High pressure breathing air compressor
* Low pressure breathing air compressor
* Gas blending
* Gas blending for scuba diving
* Gas panel
* Gas reclaim system
* Gas storage bank
* Gas storage quad
* Gas storage tube
* Helium analyzer
* Nitrox production
* Membrane method of gas concentration
* Pressure swing adsorption
* Oxygen analyser
* Oxygen compatibility

|

Decompression
equipment|

* Built-in breathing system
* Decompression tables
* Dive computer
* Diving bell
* Bell cursor
* Closed bell
* Clump weight
* Launch and recovery system
* Wet bell
* Diving chamber
* Diving stage
* Jersey upline
* Recreational Dive Planner
* Saturation system

Platforms|

* Dive boat
* Boarding stirrup
* Canoe and kayak diving
* Combat Rubber Raiding Craft
* Diving platform (scuba)
* Liveaboard
* Subskimmer
* Diving support vessel
* HMS Challenger (K07)
* Moon pool
* Underwater habitat
* Aquarius Reef Base
* Continental Shelf Station Two
* Helgoland Habitat
* Jules' Undersea Lodge
* Scott Carpenter Space Analog Station
* SEALAB
* Tektite habitat

Remotely operated
underwater vehicles|

* 8A4-class ROUV
* ABISMO
* Atlantis ROV Team
* CURV
* Épaulard
* Global Explorer ROV
* Goldfish-class ROUV
* Kaikō ROV
* Long-Term Mine Reconnaissance System
* Mini Rover ROV
* OpenROV
* ROV KIEL 6000
* ROV PHOCA
* Scorpio ROV
* Sea Dragon-class ROV
* Seabed tractor
* Seafox drone
* Seahorse ROUV
* SeaPerch
* SJT-class ROUV
* T1200 Trenching Unit
* VideoRay UROVs

Safety equipment|

* Diver down flag
* Diving shot
* Hyperbaric lifeboat
* Hyperbaric stretcher
* Jackstay
* Jonline
* Reserve gas supply

General|

* Diving ladder
* Hot water system
* Downline

Freediving

| Activities|

* Aquathlon
* Apnoea finswimming
* Freediving
* Haenyeo
* Pearl hunting
* Ama
* Snorkeling
* Spearfishing
* Underwater football
* Underwater hockey
* Underwater ice hockey
* Underwater rugby
* Underwater target shooting

|

Competitions|

* Nordic Deep
* Vertical Blue
* Disciplines
* Constant weight (CWT)
* Constant weight without fins (CNF)
* Dynamic apnea (DYN)
* Dynamic apnea without fins (DNF)
* Free immersion (FIM)
* No-limits apnea (NLT)
* Static apnea (STA)
* Skandalopetra diving
* Variable weight apnea (VWT)
* Variable weight apnea without fins

Equipment|

* Diving mask
* Diving suit
* Fins
* Hawaiian sling
* Monofin
* Polespear
* Snorkel (swimming)
* Speargun
* Water polo cap

Freedivers|

* Deborah Andollo
* Peppo Biscarini
* Sara Campbell
* Derya Can Göçen
* Goran Čolak
* Carlos Coste
* Robert Croft
* Mandy-Rae Cruickshank
* Yasemin Dalkılıç
* Leonardo D'Imporzano
* Flavia Eberhard
* Şahika Ercümen
* Emma Farrell
* Francisco Ferreras
* Pierre Frolla
* Flavia Eberhard
* Mehgan Heaney-Grier
* Elisabeth Kristoffersen
* Loïc Leferme
* Enzo Maiorca
* Jacques Mayol
* Audrey Mestre
* Karol Meyer
* Stéphane Mifsud
* Alexey Molchanov
* Natalia Molchanova
* Dave Mullins
* Patrick Musimu
* Guillaume Néry
* Herbert Nitsch
* Umberto Pelizzari
* Annelie Pompe
* Michal Risian
* Stig Severinsen
* Tom Sietas
* Aharon Solomons
* Martin Štěpánek
* Walter Steyn
* Tanya Streeter
* William Trubridge
* Devrim Cenk Ulusoy
* Danai Varveri
* Alessia Zecchini
* Nataliia Zharkova

Hazards|

* Barotrauma
* Drowning
* Freediving blackout
* Deep-water blackout
* Shallow-water blackout
* Hypercapnia
* Hypothermia

Historical|

* Ama
* Octopus wrestling
* Swimming at the 1900 Summer Olympics – Men's underwater swimming

Organisations|

* AIDA International
* Scuba Schools International
* Australian Underwater Federation
* British Freediving Association
* Confédération Mondiale des Activités Subaquatiques
* Fédération Française d'Études et de Sports Sous-Marins
* Performance Freediving International

Professional diving

| Occupations|

* Ama
* Commercial diving
* Commercial offshore diving
* Hazmat diving
* Divemaster
* Diving instructor
* Diving safety officer
* Diving supervisor
* Haenyeo
* Media diving
* Underwater photography
* Underwater videography
* Military diving
* Army engineer diver
* Clearance diver
* Frogman
* Police diving
* Public safety diving
* Scientific diving
* Underwater archaeology

|

Underwater work|

* Commercial offshore diving
* Dive guide
* Diver training
* Recreational diver training
* Hyperbaric welding
* Nondestructive testing
* Pearl hunting
* Police diving
* Public safety diving
* Salvage diving
* Scientific diving
* Sponge diving
* Submarine pipeline
* Underwater archaeology
* Underwater demolition
* Underwater photography
* Underwater search and recovery
* Underwater videography

Tools & equipment|

* Abrasive waterjet
* Airlift
* In-water surface cleaning
* Brush cart
* Cavitation cleaning
* Pressure washing
* Lifting bag
* Remotely operated underwater vehicle
* Silt screw
* Snoopy loop
* Thermal lance
* Tremie
* Water jetting

Underwater
weapons|

* Limpet mine
* Speargun
* Hawaiian sling
* Polespear

| Underwater
firearm|

* Gyrojet
* Mk 1 Underwater Defense Gun
* Powerhead
* Underwater pistols
* Heckler & Koch P11
* SPP-1 underwater pistol
* Underwater revolvers
* AAI underwater revolver
* Underwater rifles
* ADS amphibious rifle
* APS underwater rifle
* ASM-DT amphibious rifle

|

Recreational diving

| Specialties|

* Altitude diving
* Cave diving
* Deep diving
* Ice diving
* Muck diving
* Open-water diving
* Rebreather diving
* Sidemount diving
* Solo diving
* Technical diving
* Wreck diving

|

Diver
organisations|

* British Sub-Aqua Club (BSAC)
* Cave Divers Association of Australia (CDAA)
* Cave Diving Group (CDG)
* Comhairle Fo-Thuinn (CFT)
* Confédération Mondiale des Activités Subaquatiques (CMAS)
* Federación Española de Actividades Subacuáticas (FEDAS)
* Fédération Française d'Études et de Sports Sous-Marins (FFESSM)
* International Association for Handicapped Divers (IAHD)
* National Association for Cave Diving (NACD)
* Woodville Karst Plain Project (WKPP)

Diving tourism
industry|

* Environmental impact of recreational diving
* Scuba diving tourism
* Shark tourism
* Sinking ships for wreck diving sites

Recreational
dive sites|

| Reef diving
regions|

* Arrecifes de Cozumel National Park
* Great Barrier Reef
* iSimangaliso Marine Protected Area
* Poor Knights Islands
* Table Mountain National Park Marine Protected Area

|

Reef dive
sites|

* Artificial reef
* Gibraltar Artificial Reef
* Shark River Reef
* Osborne Reef
* Palancar Reef
* Underwater artworks
* Cancún Underwater Museum
* Christ of the Abyss
* The Diver
* Molinere Underwater Sculpture Park

Wreck diving
regions|

* Chuuk Lagoon
* Maritime Heritage Trail – Battle of Saipan
* Whitefish Point Underwater Preserve
* Wreck Alley, San Diego

Wreck dive
sites|

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* USNS General Hoyt S. Vandenberg
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* King Cruiser
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* Zingara

Cave diving
sites|

* Devil's Throat at Punta Sur
* Engelbrecht
* Fossil Cave
* Piccaninnie Ponds
* Pollatoomary
* Sistema Ox Bel Ha
* Sistema Sac Actun
* Sistema Dos Ojos
* Sistema Nohoch Nah Chich

Freshwater
dives|

* Ewens Ponds
* Little Blue Lake

Training sites|

* Capernwray Dive Centre
* National Diving and Activity Centre
* Stoney Cove

Open ocean
diving|

* Blue-water diving
* Black-water diving

Diving safety

* Ergonomics of diving equipment
* Human factors in diving safety
* Life support system
* Safety-critical system

| Diving hazards|

* Trait anxiety
* Cold shock response
* Decompression
* List of diving hazards and precautions
* Nitrogen narcosis
* Overconfidence effect
* Oxygen toxicity
* Panic
* Penetration diving
* Seasickness
* Silt out
* Single point of failure
* Task loading
* Uncontrolled decompression

|

Consequences|

* Barotrauma
* Decompression sickness
* Drowning
* Hypothermia
* Hypoxia
* Hypercapnia
* Hypothermia

Risk
management|

* Checklist
* Hazard identification and risk assessment
* Hazard analysis
* Job safety analysis
* Risk assessment
* Risk control
* Hierarchy of hazard controls
* Incident pit
* Lockout-tagout
* Permit To Work
* Redundancy
* Safety data sheet
* Situation awareness
* Diving team
* Bellman
* Chamber operator
* Diver's attendant
* Diving supervisor
* Diving systems technician
* Life support technician
* Stand-by diver
* Equipment safety
* Breathing gas quality
* Testing and inspection of diving cylinders
* Hydrostatic test
* Sustained load cracking
* Diving regulators
* Breathing performance of regulators
* Occupational safety and health
* Approaches to safety
* Job safety analysis
* Risk assessment
* Toolbox talk
* Housekeeping
* Association of Diving Contractors International
* Code of practice
* Contingency plan
* Diving regulations
* Emergency procedure
* Emergency response plan
* Evacuation plan
* Hazardous Materials Identification System
* Hierarchy of hazard controls
* Administrative controls
* Engineering controls
* Hazard elimination
* Hazard substitution
* Personal protective equipment
* International Marine Contractors Association
* Occupational hazard
* Biological hazard
* Chemical hazard
* Physical hazard
* Psychosocial hazard
* Occupational hygiene
* Exposure assessment
* Occupational exposure limit
* Workplace health surveillance
* Safety culture
* Code of practice
* Health and safety representative
* Operations manual
* Safety meeting
* Standard operating procedure

Diving
procedures|

* Ascending and descending
* Emergency ascent
* Boat diving
* Canoe and kayak diving
* Buddy diving
* Decompression
* Decompression practice
* Pyle stop
* Ratio decompression
* Dive briefing
* Dive log
* Dive planning
* Scuba gas planning
* Diver communications
* Diving hand signals
* Diving line signals
* Diver voice communications
* Diver rescue
* Diver training
* Doing It Right
* Drift diving
* Gas blending for scuba diving
* Night diving
* Solo diving
* Water safety

Incidents|

| Diver rescues|

* Tham Luang cave rescue

|

Early diving|

* John Day (carpenter)
* Charles Spalding
* Ebenezer Watson

Freediving|

* Loïc Leferme
* Audrey Mestre
* Nicholas Mevoli
* Natalia Molchanova

Professional
diving|

* Johnson Sea Link accident
* Offshore diving incidents
* Byford Dolphin diving bell accident
* Drill Master diving accident
* Star Canopus diving accident
* Venture One diving accident
* Waage Drill II diving accident
* Wildrake diving accident
* Professional diver fatalities
* Roger Baldwin
* John Bennett
* Victor F. Guiel Jr.
* Craig M. Hoffman
* Peter Henry Michael Holmes
* Edwin Clayton Link
* Gerard Anthony Prangley
* Pier Skipness
* Robert John Smyth
* Albert D. Stover
* Richard A. Walker
* Lothar Michael Ward
* Joachim Wendler
* Death of Bradley Westell
* Arne Zetterström

Scuba diving
fatalities|

* Ricardo Armbruster
* Allan Bridge
* David Bright
* Berry L. Cannon
* Cotton Coulson
* Cláudio Coutinho
* E. Yale Dawson
* Deon Dreyer
* Milan Dufek
* Sheck Exley
* Maurice Fargues
* Guy Garman
* Steve Irwin
* Jim Jones
* Henry Way Kendall
* Artur Kozłowski
* Chris and Chrissy Rouse
* Kirsty MacColl
* Agnes Milowka
* François de Roubaix
* Dave Shaw
* Wesley C. Skiles
* Dewey Smith
* Rob Stewart
* Esbjörn Svensson
* Josef Velek

Diving medicine

| Diving
disorders|

* List of signs and symptoms of diving disorders
* Cramps
* Motion sickness
* Surfer's ear

| Pressure
related|

* Aerosinusitis
* Air embolism
* Alternobaric vertigo
* Barodontalgia
* Barostriction
* Barotrauma
* Compression arthralgia
* Decompression illness
* Dental barotrauma
* Dysbarism
* Pulmonary barotrauma

| Oxygen|

* Freediving blackout
* Hyperoxia
* Hypoxia
* Oxygen toxicity

|

Inert gases|

* Avascular necrosis
* Decompression sickness
* Isobaric counterdiffusion
* Taravana
* Dysbaric osteonecrosis
* High-pressure nervous syndrome
* Hydrogen narcosis
* Nitrogen narcosis

Carbon dioxide|

* Hypercapnia
* Hypocapnia

Breathing gas
contaminants|

* Carbon monoxide poisoning

Immersion
related|

* Asphyxia
* Drowning
* Hypothermia
* Immersion diuresis
* Instinctive drowning response
* Laryngospasm
* Salt water aspiration syndrome
* Swimming-induced pulmonary edema

Treatment|

* Demand valve oxygen therapy
* First Aid
* Hyperbaric medicine
* Hyperbaric treatment schedules
* In-water recompression
* Oxygen therapy
* Therapeutic recompression

Personnel|

* Diving Medical Examiner
* Diving Medical Practitioner
* Diving Medical Technician
* Hyperbaric nursing

Screening|

* Atrial septal defect
* Fitness to dive
* Psychological fitness to dive

Research|

| Researchers in
diving physiology
and medicine|

* Arthur J. Bachrach
* Albert R. Behnke
* Paul Bert
* George F. Bond
* Robert Boyle
* Albert A. Bühlmann
* John R. Clarke
* Guybon Chesney Castell Damant
* William Paul Fife
* John Scott Haldane
* Robert William Hamilton Jr.
* Leonard Erskine Hill
* Brian Andrew Hills
* Felix Hoppe-Seyler
* Christian J. Lambertsen
* Simon Mitchell
* Charles Momsen
* John Rawlins R.N.
* Charles Wesley Shilling
* Edward D. Thalmann
* Jacques Triger

|

Diving medical
research
organisations|

* Aerospace Medical Association
* Divers Alert Network (DAN)
* Diving Diseases Research Centre (DDRC)
* Diving Medical Advisory Council (DMAC)
* European Diving Technology Committee (EDTC)
* European Underwater and Baromedical Society (EUBS)
* National Board of Diving and Hyperbaric Medical Technology
* Naval Submarine Medical Research Laboratory
* Royal Australian Navy School of Underwater Medicine
* Rubicon Foundation
* South Pacific Underwater Medicine Society (SPUMS)
* Southern African Underwater and Hyperbaric Medical Association (SAUHMA)
* Undersea and Hyperbaric Medical Society (UHMS)
* United States Navy Experimental Diving Unit (NEDU)

Law

* Civil liability in recreational diving
* Duty of care
* List of legislation regulating underwater diving
* Investigation of diving accidents

History of underwater diving

* Aqua-Lung
* History of decompression research and development
* History of scuba diving
* List of researchers in underwater diving
* Porpoise regulator
* Standard diving dress
* Timeline of diving technology
* Underwater diving in popular culture
* Vintage scuba

Publications

| Manuals|

* NOAA Diving Manual
* U.S. Navy Diving Manual
* Basic Cave Diving: A Blueprint for Survival

|

Standards and
Codes of Practice|

* DIN 7876

General non-fiction|

* The Darkness Beckons
* Goldfinder
* The Last Dive
* Shadow Divers

Training and registration

| Diver
training|

* Diving instructor
* Diving school
* Occupational diver training
* Commercial diver training
* Military diver training
* Public safety diver training
* Scientific diver training
* Competence and assessment
* Competency-based learning
* Skill assessment
* Refresher training (diving)
* Diver training standard
* Recreational diver training
* Introductory diving
* Skills
* Diver navigation
* Diver trim
* Ear clearing
* Frenzel maneuver
* Valsalva maneuver
* Finning techniques
* Scuba skills
* Buddy breathing
* Low impact diving
* Diamond Reef System
* Surface-supplied diving skills
* Underwater searches
* Teaching methods
* Muscle memory
* Overtraining
* Stress exposure training

|

Organisations|

* European Underwater Federation (EUF)
* International Diving Regulators and Certifiers Forum (IDRCF)
* International Diving Schools Association (IDSA)
* International Marine Contractors Association (IMCA)
* List of diver certification organizations
* National Oceanic and Atmospheric Administration (NOAA)
* Nautical Archaeology Society
* Universal Referral Program
* World Recreational Scuba Training Council (WRSTC)

| Commercial diver
certification
authorities|

* Australian Diver Accreditation Scheme (ADAS)
* Commercial diver registration in South Africa
* Divers Institute of Technology
* Health and Safety Executive (HSE)
* Department of Employment and Labour

|

Commercial diving
schools|

* Divers Academy International

Free-diving
certification
agencies|

* AIDA International (AIDA)
* Confédération Mondiale des Activités Subaquatiques (CMAS)
* Performance Freediving International (PI)
* Scuba Schools International (SSI)

Recreational scuba
certification
agencies|

* American Canadian Underwater Certifications (ACUC)
* American Nitrox Divers International (ANDI)
* Association nationale des moniteurs de plongée (ANMP)
* British Sub-Aqua Club (BSAC)
* Comhairle Fo-Thuinn (CFT)
* Confédération Mondiale des Activités Subaquatiques (CMAS)
* Federación Española de Actividades Subacuáticas (FEDAS)
* Fédération Française d'Études et de Sports Sous-Marins (FFESSM)
* Federazione Italiana Attività Subacquee (FIAS)
* Global Underwater Explorers (GUE)
* International Association for Handicapped Divers (IAHD)
* International Association of Nitrox and Technical Divers (IANTD)
* International Diving Educators Association (IDEA)
* Israeli Diving Federation (TIDF)
* National Association for Cave Diving (NACD)
* National Academy of Scuba Educators (NASE)
* National Association of Underwater Instructors (NAUI)
* Nederlandse Onderwatersport Bond (NOB)
* Professional Association of Diving Instructors (PADI)
* Professional Diving Instructors Corporation (PDIC)
* Sub-Aqua Association (SAA)
* Scuba Diving International (SDI)
* Scuba Educators International (SEI)
* Scottish Sub Aqua Club (ScotSAC)
* Scuba Schools International (SSI)
* Türkiye Sualtı Sporları Federasyonu (TSSF)
* United Diving Instructors (UDI)
* YMCA SCUBA Program

Recreational scuba
certification
levels|

* Advanced Open Water Diver
* Autonomous diver
* CMAS* scuba diver
* CMAS** scuba diver
* Dive leader
* Divemaster
* Diving instructor
* Introductory diving
* Low Impact Diver
* Master Instructor
* Master Scuba Diver
* Open Water Diver
* Rescue Diver
* Solo diver
* Supervised diver

Scientific diver
certification
authorities|

* American Academy of Underwater Sciences (AAUS)
* CMAS Scientific Committee

Technical
certification
agencies|

* American Nitrox Divers International (ANDI)
* British Sub-Aqua Club (BSAC)
* Confédération Mondiale des Activités Subaquatiques (CMAS)
* Diving Science and Technology (DSAT)
* Federazione Italiana Attività Subacquee (FIAS)
* Global Underwater Explorers (GUE)
* International Association of Nitrox and Technical Divers (IANTD)
* National Association of Underwater Instructors (NAUI)
* Professional Association of Diving Instructors (PADI)
* Professional Diving Instructors Corporation (PDIC)
* Technical Diving International (TDI)
* Trimix Scuba Association (TSA)
* Technical Extended Range (TXR)

| Cave
diving|

* Cave Divers Association of Australia (CDAA)
* Cave Diving Group (CDG)
* Global Underwater Explorers (GUE)
* National Association for Cave Diving (NACD)
* National Speleological Society#Cave Diving Group (CDG)
* National Association of Underwater Instructors (NAUI)
* Technical Diving International (TDI)

|

Underwater sports

| Surface snorkeling|

* Finswimming (surface swimming & bi-fins)

|

Snorkeling/breath-hold|

* Spearfishing
* Underwater football
* Underwater hockey
* Underwater rugby
* Underwater target shooting

Breath-hold|

* Aquathlon (underwater wrestling)
* Apnoea finswimming
* Freediving
* Underwater ice hockey

Open Circuit Scuba|

* Immersion finswimming
* Sport diving (sport)
* Underwater orienteering
* Underwater photography (sport)

Rebreather|

* Underwater photography (sport)

Sports governing
organisations|

* International
* AIDA International
* Confédération Mondiale des Activités Subaquatiques)
* National
* Australian Underwater Federation
* British Octopush Association
* British Underwater Sports Association
* Comhairle Fo-Thuinn
* Federación Española de Actividades Subacuáticas
* Fédération Française d'Études et de Sports Sous-Marins
* South African Underwater Sports Federation
* Türkiye Sualtı Sporları Federasyonu
* Underwater Society of America)

Freediver Federations|

* AIDA International
* AIDA Hellas
* British Freediving Association (BFA)
* Confédération Mondiale des Activités Subaquatiques (CMAS)

Sports federations|

* Australian Underwater Federation (AUF)
* British Octopush Association (BOA)
* British Underwater Sports Association (BUSA)
* Federación Española de Actividades Subacuáticas (FEDAS)
* Fédération Française d'Études et de Sports Sous-Marins (FFESSM)
* South African Underwater Sports Federation (SAUSF)
* Türkiye Sualtı Sporları Federasyonu (TSSF)
* Underwater Society of America (USOA)

Underwater divers

| Pioneers of diving|

* Aquanaut
* Jacques Cousteau
* Hans Hass
* Arne Zetterström

|

Underwater scientists and archaeologists|

* Michael Arbuthnot
* Robert Ballard
* George Bass
* Mensun Bound
* Louis Boutan
* Hugh Bradner
* Cathy Church
* Eugenie Clark
* James P. Delgado
* Sylvia Earle
* John Christopher Fine
* George R. Fischer
* Anders Franzén
* Honor Frost
* David Gibbins
* Robert F. Marx
* Charles T. Meide
* Mark M. Newell
* John Peter Oleson
* Margaret Rule
* Gunter Schöbel
* E. Lee Spence
* Robert Sténuit
* Peter Throckmorton

Scuba record holders|

* Sheck Exley
* Nuno Gomes

Underwater filmmakers|

* Samir Alhafith
* David Attenborough
* Ramón Bravo
* Ivan Tors
* Andrew Wight

Underwater photographers|

* Tamara Benitez
* Georges Beuchat
* Adrian Biddle
* Jonathan Bird
* Eric Cheng
* Neville Coleman
* Jacques Cousteau
* John D. Craig
* Ben Cropp
* Bernard Delemotte
* David Doubilet
* John Christopher Fine
* Dermot FitzGerald
* Rodney Fox
* Ric Frazier
* Stephen Frink
* Peter Gimbel
* Monty Halls
* Hans Hass
* Henry Way Kendall
* Rudie Kuiter
* Joseph B. MacInnis
* Luis Marden
* Agnes Milowka
* Noel Monkman
* Steve Parish
* Zale Parry
* Pierre Petit
* Leni Riefenstahl
* Peter Scoones
* Brian Skerry
* Wesley C. Skiles
* E. Lee Spence
* Philippe Tailliez
* Ron and Valerie Taylor
* Albert Tillman
* John Veltri
* Stan Waterman
* Jiang Wenhao
* Michele Westmorland
* John Ernest Williamson
* J. Lamar Worzel

Underwater explorers|

* Caves
* Sheck Exley
* Martyn Farr
* Jill Heinerth
* William Hogarth Main
* Rick Stanton
* Bill Stone
* John Volanthen
* Reefs
*   * Wrecks
* Clive Cussler
* Aristotelis Zervoudis

Science of underwater diving

| Diving
physics|

* Breathing performance of regulators
* Buoyancy
* Archimedes' principle
* Neutral buoyancy
* Diffusion
* Molecular diffusion
* Force
* Gas law
* Amontons's law
* Boyle's law
* Charles's law
* Combined gas law
* Dalton's law
* Gay-Lussac's law
* Ideal gas law
* Oxygen fraction
* Permeation
* Pressure
* Absolute pressure
* Ambient pressure
* Atmospheric pressure
* Gauge pressure
* Hydrostatic pressure
* Metre sea water
* Partial pressure
* Psychrometric constant
* Solubility
* Henry's law
* Saturation
* Solution
* Supersaturation
* Surface tension
* Hydrophobe
* Surfactant
* Torricellian chamber
* Underwater vision
* Snell's law
* Weight
* Apparent weight

|

Diving
physiology|

* Artificial gills
* Circulatory system
* Blood shift
* Patent foramen ovale
* Perfusion
* Systemic circulation
* Cold shock response
* Diving reflex
* Equivalent narcotic depth
* Lipid
* Maximum operating depth
* Metabolism
* Physiological response to water immersion
* Respiration
* Blood–air barrier
* Breathing
* CO₂ retention
* dead space
* Gas exchange
* Hypocapnia
* Normocapnia
* Respiratory exchange ratio
* Respiratory quotient
* Respiratory system
* Work of breathing
* Tissue
* Underwater vision

| Decompression
theory|

* Decompression models:
* Bühlmann decompression algorithm
* Haldane's decompression model
* Reduced gradient bubble model
* Thalmann algorithm
* Thermodynamic model of decompression
* Varying Permeability Model
* Equivalent air depth
* Equivalent narcotic depth
* Maximum operating depth
* Oxygen window in diving decompression
* Physiology of decompression
* Pulmonary circulation

|

Diving
environment|

| Diving
environment
classification|

* Altitude diving
* Benign water diving
* Confined water diving
* Deep diving
* Inland diving
* Inshore diving
* Muck diving
* Night diving
* Open water diving
* Open ocean diving
* Black-water diving
* Blue-water diving
* Penetration diving
* Cave diving
* Ice diving
* Wreck diving
* Recreational dive sites
* Underwater environment

|

Environmental
impact|

* Environmental impact of recreational diving
* Low impact diving

Environmental
factors|

* Algal bloom
* Currents:
* Current
* Longshore drift
* Ocean current
* Rip current
* Tidal race
* Undertow
* Upwelling
* Ekman transport
* Halocline
* List of diving hazards and precautions
* Reef
* Coral reef
* Stratification
* Thermocline
* Tides
* Turbidity
* Wind wave
* Breaking wave
* Surf
* Surge
* Wave shoaling

Special interest groups

* Artificial Reef Society of British Columbia (ARSBC)
* CMAS Europe
* Diving Equipment and Marketing Association (DEMA)
* Divers Alert Network (DAN)
* Green Fins
* Historical Diving Society
* Nautical Archaeology Society (NAS)
* Naval Air Command Sub Aqua Club
* Project AWARE
* Reef Life Survey
* Save Ontario Shipwrecks (SOS)
* SeaKeys
* Sea Research Society

Other

* Submarine escape training facility

* Category
* Commons
*   * Glossary
* Indexes: dive sites
* divers
* diving
*   * Outline
* Portal

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