Diving
Diving
Diving (/ˈdaɪvɪŋ/) is the sport or activity of plunging or jumping into water, typically from a platform or springboard, often while performing acrobatics. Diving is an internationally recognized sport that is part of the Olympic Games. In addition, unstructured and non-competitive diving is a recreational pastime.
Etymology
The term "diving" comes from the Old English dyfan meaning "to dip, submerge" and the Middle English diven meaning "to dive, duck, plunge."
Types of Diving
There are several types of diving, including freediving, scuba diving, deep diving, and cave diving. Each type of diving requires specific training and equipment.
- Freediving - Also known as breath-hold diving or skin diving. This is a form of underwater diving that relies on the diver's ability to hold their breath until resurfacing rather than using a breathing apparatus such as scuba gear.
- Scuba Diving - A form of underwater diving where the diver uses a self-contained underwater breathing apparatus (scuba), which is completely independent of surface supply, to breathe underwater.
- Deep Diving - 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 by an authority, and in others it is associated with a level of certification or training.
- Cave Diving - 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, or for the search for and recovery of divers lost while diving for one of these reasons.
Related Terms
- Decompression (diving) - The reduction in ambient pressure experienced by the diver after hyperbaric exposure and the elimination of dissolved gases from the diver's tissues.
- Dive Computer - A device used by an underwater diver to measure the time and depth of a dive so that a safe ascent profile can be calculated and displayed so that the diver can avoid decompression sickness.
- Dive Mask - A piece of diving equipment that allows underwater divers to see clearly underwater.
- Dive Watch - A watch designed for underwater diving that features, as a minimum, a water resistance greater than 1.0 MPa (10 atm), the equivalent of 100 m (330 ft) depth.
- Dive Light - A light source carried by an underwater diver to illuminate the underwater environment.
- Dive Boat - A boat that recreational divers or professional scuba divers use to reach a dive site which they could not conveniently reach by swimming from the shore.
External links
- Medical encyclopedia article on Diving
- Wikipedia's article - Diving
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