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Underwater diving

Underwater diving. Underwater diving is the practice of going underwater, either with breathing apparatus or by breath-holding (free-diving). History.

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Underwater diving

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  1. Underwater diving • Underwater diving is the practice of going underwater, either with breathing apparatus or by breath-holding (free-diving).

  2. History • Underwater diving began in Ancient Greece, since both Plato and Homer mentioned about it. The island of Kalymnos was a main centre of diving for sponges.

  3. Diving without breathing apparatus Free diving • Free diving includes a range of activities from simple breath-hold diving

  4. Swimming underwater • The ability to dive and swim underwater can be a useful skill, and is an important part of watersport and training. It is an enjoyable leisure activity.

  5. Diving training • Underwater diving training should come from a qualified diving instructor, to be safe.

  6. Dangers of diving • Decompression sickness (клаустрофобия) • Oxygen toxicity (недостаток кислорода ) • Dangerous fish • Underwater rock

  7. Author of the work: MekhAliona =)

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