USOA - Underwater Society of America  
   The sanctioning body for underwater sports in the United States, is active in issues affecting divers right to dive, marine ecology, safety, legislation, conservation and serves to provide education and information that keep divers, councils, and clubs aw
   http://www.underwater-society.org

DEMA - Diving Equipment & Marketing Association  
   Represents companies whose mission is to promote and help provide growth within recreational diving. Includes news, calendar of events, and information on membership.
   http://www.dema.org

DAN Divers Alert Network  
   A non-profit scuba diving and dive safety association providing expert medical advice for underwater injuries, emergency information, research, and products.
   http://www.diversalertnetwork.org

American Academy of Underwater Sciences  
   A non-Profit group composed of diving scientists who are dedicated to the establishment and maintenance of standards for scientific diving.
   http://www.aaus.org

Medical Training  
   Providing Para Medic Training for Commercial and Recreational Scuba Instructors. HSE/IMCA training standards for Commercial Diving. HSE (UK) medical required for ALL programmes. Courses offered are DMT-Basic, DMT-Intermediate, DMT-Para Medic, Hyperbaric C
   http://www.divermedictraining.com

Raising Aquatic Awareness in Youth with SCUBA  
   The RAAYS Program educates children about the marine environment through SCUBA certification.
   http://www.raays.com

ACUC INTERNATIONAL  
   American & Canadian Underwater Certifications
   http://www.acuc.es

The Historical Diving Society  
   The HDS aims to protect and preserve diving heritage. Everything about historical divers, diving history, underwater technology, inventions and submarine engineering.
   http://www.thehds.com/

Cave Divers Association of Australia  
   Official website of the CDAA. Information on training, dive sites, site maps, news, instructors, products and photographs.
   http://www.cavedivers.com.au

Bahamas Diving Association  
   Offers a complete scuba diving guide to The Islands of The Bahamas.
   http://www.bahamasdiving.com

International Association of Dive Rescue Specialists  
   The IADRS is a non-profit organization for rescue & recovery SCUBA divers. Members receive SEARCHLINES, a bi-monthly magazine for water rescue professionals.
   http://www.iadrs.org

Diver Certification Board of Canada  
   The certifying body for commercial divers working in the Canadian Offshore oil and gas industry.
   http://www.diverboard.ca

NAUI Services Canada  
   Official distributor for NAUI products and services in Canada including non-leadership certifications.
   http://divemar.com/naui.html

UK Sport Diving Medical Committee  
   Advises three UK diving organizations - BSAC, SAA and SSAC on medical issues including fitness to dive. Includes medical standards, referees, research reviews, and contact information.
   http://www.uksdmc.co.uk

British Octopush Association  
   The Controlling Body of Underwater Hockey in the United Kingdom.
   http://www.britishoctopush.org/

Delta Dive Club  
   Scuba club run by Delta Air Lines employees. Dive discussions and club dives are regular events. Associate memberships available for non-Delta employees.
   http://www.gate1.net/deltadiveclub/

Divers Recall  
   US centric, organization for deep sea divers, commercial and military, retired and active.
   http://diversrecall.org

Cayman Islands Watersports Operators Association  
   Promotes safety and cooperation among local dive operators. Includes Code of Safety Requirement and Standards.
   http://www.cayman.org/ciwoa/

Eastern Dive Boat Association  
   Promotes safety and cooperation among dive boat charter operators on the east coast with the majority of members located in New York and New Jersey. Includes membership, member vessel descriptions, and directions.
   http://www.edba.com/

Midwest Technical Recovery Team  
   Dive team which provides assistance in the recovery of persons or evidence in the Great Lakes region especially in environments beyond recreational diving limits. Includes description of training, FAQ, and photographs.
   http://www.mtrt.org

Oceanic Research Group  
   A non-profit environmental organization dedicated to ocean conservation with large stock photo archive.
   http://www.oceanicresearch.org/

Blueventures Conservation  
   UK-based not-for-profit organization, dedicated to facilitating projects that enhance global coral reef conservation and research, offering opportunities to volunteers. Includes news, expeditions, and contact information.
   http://www.blueventures.org

Scuba Divers Federation of South Australia (SDF)  
   SDF works to develop recreational SCUBA diving in South Australia and encourages the conservation and protection of the marine and freshwater environments.
   http://www.geocities.com/scubadiversfederation/

Dizzy Divers  
   Fundraising charity for disabled diving training. Includes on-line store, members, sponsors, and humor.
   http://www.dizzydivers.org

Association of Tobago Dive Operators  
   Includes information on local dive centers, dive sites, and travel inforamation.
   http://www.tobagoscubadiving.com

US Dental Diving Association  
   An organization of dentists who enjoy the activity. Features information on the group, newsletter, photos and contacts.
   http://www.usdda.com

Australian Diver Accreditation Scheme (ADAS)  
   A Commonwealth Government not-for-profit diver training and accreditation scheme, for occupational divers.
   http://www.adas.org.au

San Marcos Area Recovery Team  
   SMART Divers was organized to assist public service agencies and organizations with underwater search, recovery, and crime scene investigations.
   http://www.smartdivers.com

Underwater Explorers Club of Western Australia  
   Features mission statement, contacts, photo album, and newsletter. Headquarters in Perth.
   http://www.space.net.au/~uec/