The World Recreational Scuba Training Council or (WRSTC) was founded in 1999 and is dedicated to creating minimum recreational diving

Recreational diving

Recreational diving or sport diving is a type of diving that uses SCUBA equipment for the purpose of leisure and enjoyment. In some diving circles, the term "recreational diving" is used in contradistinction to "technical diving", a more demanding aspect of the sport which requires greater levels...

 training standards for the various scuba diving

Scuba diving

Scuba diving is a form of underwater diving in which a diver uses a scuba set to breathe underwater....

 certification agencies across the world. The WRSTC restricts its membership to national or regional councils. These councils consist of individual training organizations who collectively represent at least 50% of the annual diver certifications in the member council's country or region. A national council is referred to as a RSTC (Recreational Scuba Training Council).

The most significant training organisations which are not members or the WRSTC or regional RSTCs are Confédération Mondiale des Activités Subaquatiques

Confédération Mondiale des Activités Subaquatiques

The Confédération Mondiale des Activités Subaquatiques is the World Underwater Federation. CMAS is the international umbrella organisation for recreational diver training organisations represented in the CMAS Technical Committee and underwater sports governed by the CMAS Sport Committee...

 (CMAS), National Association of Underwater Instructors

National Association of Underwater Instructors

The National Association of Underwater Instructors is a non-profit 501 association of SCUBA instructors. It was officially CE and ISO certified in May 2007 in all three diver levels and both instructor levels.-History:...

 (NAUI), British Sub-Aqua Club (BSAC), and International Association of Nitrox and Technical Divers

International Association of Nitrox and Technical Divers

International Association of Nitrox and Technical Divers is a SCUBA diving organization concerned with certification and training in Enriched Air Nitrox diving, Technical diving and Free diving.- History :...

 (IANTD).

United States RSTC

The USA's RSTC is recognised as the ANSI

Ansi

Ansi is a village in Kaarma Parish, Saare County, on the island of Saaremaa, Estonia....

 Accredited Standards Developer (ASD) for the development of recreational diving instructional standards and standardizing other training related issues. The following agencies are currently members:

• IDEA
  International Diving Educators Association
  The International Diving Educators Association or was originally founded in 1952 as the Florida Skin Divers Association Scuba Training Committee, and later changed its name to the Florida Scuba Divers Association. As the group's membership grew, so did desire to make the organization and...
  
   - International Diving Educators Association
• PADI
  Professional Association of Diving Instructors
  The Professional Association of Diving Instructors is the world's largest recreational diving membership and diver training organization founded in 1966 by John Cronin and Ralph Erickson...
  
   - Professional Association of Diving Instructors
• PDIC
  Professional Diving Instructors Corporation
  The Professional Diving Instructors Corporation is an international SCUBA training and certification agency. It has an estimated 5 million active recreational divers....
  
   - The Professional Diving Instructors Corporation
• SDI
  SCUBA Diving International
  Scuba Diving International is a SCUBA training and certification agency. It is the recreational arm of Technical Diving International, the world’s largest technical diver training organization...
  
   - Scuba Diving International
• SSI
  Scuba Schools International
  Scuba Schools International or SSI is an organization that teaches the skills involved in scuba diving and supports Dive Businesses and Dive Resorts.SSI has well over 2,500 authorized dealers and 35 Regional Centers and Area Offices all over the World....
  
  - Scuba Schools International