Recreational scuba diving does not procure a concentrated certifying or regulatory instrumentality, and is mostly face regulated. There are, yet, several husky diving organizations that indoctrinate and bear witness (to) divers together with dive instructors, and divers diving coupled sales with an increment of rental outlets require ammunition of diver certification from one of these organizations prior for selling or renting predestined diving commodities or services.
The largest global certification agencies that are currently sanctioned by crest diving outlets for diver certification include:
American Canadian hollowed-out Certifications (ACUC) (formerly interdependence of Canadian Underwater Councils) originated in Canada in 1969 and inflated internationally in the groove 1984
British substitute Aqua Club (BSAC) based in fashion the agreed Kingdom, founded in 1953 and is the predominant dive cudgel in the world
European panel of licensed Diving Instructors (CEDIP) based in Europe since 1992 (see Cedip on French Wiki pages)
Confederation Mondiale des Activites Subaquatiques (CMAS), the World underground Federation
National blend of hollow Instructors (NAUI) based in the United States
Professional Diving Instructors Corporation (PDIC) based in the United States
Professional Association of Diving Instructors (PADI) based fashionable the amalgamated States, paramount recreational jump training together with certification coordination in the world
Scottish alternate Aqua fellowship (SSAC or ScotSAC) the National frequent Body pro the fun of diving in Scotland.
International Training SDI, TDI & ERDi -based in the United States, TDI is the Terra's largest intricate diving means, SDI is the recreational division focusing on hip methods with an increment of online courses, and ERDi is the public shelter component.
Scuba Schools International (SSI) based in the United States with 35 Regional Centers and room Offices nearly the orb.
YMCA scuba based with it the U.S., part of Young the public's Christian linkage (YMCA), a Christian interconnected organization (uncovered to fullness faiths, ages and genders despite the historic big cheese)