BSAC - British Sub Aqua Club  
   A sports diver training agency, teaching via the club principle, with more than 400 schools and 55,000 members in over 50 countries.
   http://www.bsac.com/

PADI - Professional Association of Diving Instructors  
   The largest and most recognized diving organization around the world with courses ranging from Snorkeling to Course Director.
   http://www.padi.com/

SAA - The Sub-Aqua Association  
   A club system to train people to dive and get the most out of the underwater world -We aim to provide news, information, entertainment about all aspects of the scuba diving industry. 
   http://www.saa.org.uk/

SSI - Scuba Schools International  
   As one of the fastest growing training organization in the industry, SSI has gained acceptance across the world with levels of training from your very first snorkeling experience all the way through Master Instructor.
   http://www.ssiusa.com/

PDIC - Professional Diving Instructors Corporation  
   An international training and certification agency with instructors and training facilities located worldwide.
   http://www.pdic-intl.com

DRI / Dive Rescue International  
   Dive Rescue International 28 certification levels in SCUBA rescue, recovery and underwater investigation to law enforcement, fire rescue, SAR and EMS personnel, since 1977.
   http://www.diverescueintl.com

Professional Scuba Association UK  
   The PSA UK specialises in training advanced divers in extended range recreational diving and technical diving.
   http://www.psauk.net

IANTD - International Association of Nitrox and Technical Divers  
   Enriched Air, Cave, Wreck, Rebreather, Trimix, Gas Blenders, Technical Scuba Divers, Instructors and Instructor Trainers.
   http://www.iantd.com/index1.html

NAUI - National Association of Underwater Instructors  
   In the forefront of the fight to make scuba divers more aware of the need for quality diving education and increased safety.
   http://www.naui.org/

YMCA SCUBA  
   The history of national dive training in the United States began with the development of the YMCA SCUBA Program. Throughout the history of sport diving, the YMCA has maintained unsurpassed standards.
   http://www.ymcascuba.org/

SSAC - Scottish Sub Aqua Club  
   The Governing Body for the sport of scuba diving in Scotland. Established in 1953 and proud holder of one of the best safety records in amateur diving.
   http://www.scotsac.com/

NAPSD - National Association of Public Safety Divers  
   A non-profit training organization with programs taught through an education network for the water recovery professional.
   http://www.napsd.com

Canadian Diving Group  
   Commercial diver training organization and partnered with colleges, government, and international companies. CDG offers commercial diver training, consultancy, and R and D.
   http://www.divinggroup.com/

National Association for Cave Diving  
   Certifying Agency for Cavern and Cave Diving.
   http://www.safecavediving.com

CMAS - Confederation Mondiale des Activities Subaquatiques  
   The World Underwater Federation. One of the oldest dive organisations in the world, and one that serves to coordinate standards among water sports and activities; including sub-diving, freediving and spearfishing.
   http://www.cmas2000.org/

HSA International  
   The Handicapped Scuba Association is an independent training and certifying agency that specializes in recreational diving for people with disabilities.
   http://www.hsascuba.com/

Global Underwater Explorers  
   Organized to provide the diver with safety oriented diving programs with an emphasis on environmental protection and personal enjoyment.
   http://www.gue.com

International Association for Handicapped Divers  
   Diving association which provides the means for those with disabilities to become divers. Includes location of instructors and resorts, membership information, news, and a member forum.
   http://www.iahd.org

ESA European Scuba Agency  
   International diving training agency which provides programs, products and services to diving professionals. Includes description of certifications, recognitions, news, and contact information.
   http://www.esaweb.net

Professional Scuba Inspectors.  
   PSI offers worldwide training in Visual Cylinder Inspection and High Pressures Cylinder Safety. Includes class schedule, inspector notices, and supplies.
   http://www.psicylinders.com

American Nitrox Divers International  
   Technical training organization. Includes new, information, courses, listing of instructors, and facilities.
   http://www.andi-benelux.com

TDI/SDI Middle East & Russia  
   Provides a full range of technical and recreational courses. Includes affliate dive centers, news and events, and contact information.
   http://tdi-middleeast.com/

Special Response Diver International  
   Offers courses for public safety agencies, search and rescue, law enforcement, military special operations and recreational diving instructors. Includes courses, equipment, and contact information.
   http://www.specialresponsediver.com/html/home.htm

ADC: Association of Diving Contractors  
   Establishes and encourages industry-wide observance of uniform safety standards for commercial divers. A non-profit organization dedicated to the art and science of safe commercial diving.
   http://www.adc-usa.org/

TDI/SDI New Zealand  
   Technical Diving International (TDI) and Scuba Diving International(SDI)regional office located in Auckland. Find mission statement, news, photos, information on training facilities, and contacts.
   http://www.tdisdi.co.nz

Blue Seal Diving School  
   Specializing in diving trips to Malta. Includes details of PADI courses, current jobs and contact information.
   http://www.bluesealdiving.com