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The risks of dying during recreational, scientific or commercial diving are small, and on scuba, deaths are usually associated with poor gas management, poor buoyancy control, equipment misuse, entrapment, rough water conditions and pre-existing health problems.
Diving conditions and diving equipment may cause or contribute to a diver’s death. Information may be lost as witnesses leave, forget equipment, or worse, equipment is returned to the family. Field investigation is categorized into six parts: History.
In 2018 known fatalities were a direct result of the following diving activities: leisurely diving or sightseeing (n=40), spearfishing (n=4), hunting/game collecting (n=4), training (n=3); and instructing (n=2), and other (unreported) diving activities (n=2).
- 2021
The DAN Annual Diving Report on Diving Fatalities, Injuries, and Incidents highlights the total number of scuba diving deaths worldwide by region and country. It also states how many of the circumstances and associated risks could have been reduced - or avoided altogether.
Human physiology of underwater diving is the physiological influences of the underwater environment on the human diver, and adaptations to operating underwater, both during breath-hold dives and while breathing at ambient pressure from a suitable breathing gas supply.
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Scuba diving exposes you to many effects, including immersion, cold, hyperbaric gases, elevated breathing pressure, exercise and stress, as well as a post dive risk of gas bubbles circulating in your blood. Your heart’s capacity to support an elevated blood output decreases with age and with disease.