Divers and diving technicians perform a wide variety of underwater jobs, both in oceans and in freshwater, using special underwater breathing equipment. The jobs include offshore oil well piping, building and repair of foundations and other underwater construction, salvage work, and ship repair and service. Diving technicians may serve as "tenders," or support workers, for divers. They often act as intermediaries between administrative, scientific, or engineering staff and other skilled workers in a wide range of marine activities.
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