PADI - Professional Association of Diving Instructors - International organization with certifications ranging from snorkeling to course director. Information about their online courses and community, dive centers, gear, and vacations. SSI - Scuba Schools International - International organization offering training from snorkeling through Master Instructor. Includes course information, a schedule, online training, and a scuba rangers kids club. World Underwater Federation - One of the oldest dive organizations in the world, and one that serves to coordinate standards among water sports and activities, including sub-diving, freediving, and spearfishing. HSA International - The Handicapped Scuba Association is an independent training and certifying agency that specializes in recreational diving for people with disabilities. 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. SAA - The Sub-Aqua Association - Association of independent dive clubs in the United Kingdom. Includes information about courses, a schedule, a map of clubs, and photo galleries. PDIC - Professional Diving Instructors Corporation - An international training and certification agency with instructors and training facilities located worldwide. 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. NAUI - National Association of Underwater Instructors - International nonprofit training organization with certifications from skin diver through instructor course director. Includes information about courses, policies, and dive centers. 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. Global Underwater Explorers - Organized to provide the diver with safety oriented diving programs with an emphasis on environmental protection and personal enjoyment. 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. Professional Scuba Inspectors. - PSI offers worldwide training in Visual Cylinder Inspection and High Pressures Cylinder Safety. Includes class schedule, inspector notices, and supplies. TDI/SDI Middle East & Russia - Provides a full range of technical and recreational courses. Includes affiliate dive centers, news and events, and contact information.