Scuba diving is a rich a varied activity that extends far beyond looking at pretty fish under the water. Scuba diving is still evolving as people come up with new and improved methods, techniques and equipment, but that doesn't mean that there isn't a wealth of information out there.
Scuba diving can be broken down into two broad categories: professional or commercial diving and recreational diving, and each of these can be further broken down into sub-categories of their own, each with information about equipment and certification needed, as well as basic safety rules.
Professional diving, for instance, can be broken up into military, naval, police, scientific, maintenance, and construction diving, as well as underwater archaeology, photography and tourism diving, each with its own subset of information on scuba history, education and gear. Information on recreational scuba diving includes open water, cave and deep sea dives, as well as wreck dives, diving with sharks and free diving.
Almost all information relevant to scuba diving can be found on the internet, especially on travel websites that specialise in diving packages, diving club sites and sites related to official scuba diving organisations or associations. These sites include information on anything from exotic, popular or remote scuba diving locations, certification courses, instructor courses and the various bits of equipment needed for different diving experiences, including tanks, masks and wetsuits.
The following articles contain more information on scuba diving, its equipment and categories.
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