Undersea and Hyperbaric Medicine Society - A professional organization representing physicians, nurses and technicians in the field of hyperbaric medicine.

Doc's Diving Medicine - Original articles, ongoing research and useful links related to diving and undersea medicine from the University of Washington and Dr Edmond Kay.

Underwater Medicine Associates - An educational organization devoted to diving medicine with information diving medicine, links, diving medicine textbooks and underwater photo gallery.

NAUI Online - Safety and Diving Medicine - Devoted to propagating safe diving practices and dealing with medical topics related to diving.

Virtual Naval Hospital - U.S. Navy Diving Manual is available online in Adobe Acrobat format.

British Hyperbaric Association - Information on hyperbaric facilities, sources of advice and current hyperbaric practice in UK.

National Hyperbaric Centre - Information about (NHC), Europe's leading hyperbaric testing, training and research centre located in Aberdeen, Scotland.

Navy Experimental Diving Unit - NEDU tests and evaluates diving, hyperbaric and other life support systems and procedures, and conducts research and development in biomedical and environmental physiology.

European Underwater and Baromedical Society - Dedicated to the study and promotion of diving and hyperbaric medicine.

Divers Alert Network - A non-profit international organization, with its emergency hotline, provides dive safety and medical information, medical research programs, first aid training programs, emergency oxygen equipment, and affordable accident insurance.

Eustatian Tube Library of the University of Sint Eustatius - Contains free books and articles related to undersea and hyperbaric medicine. The resources are geared to use by medical students, health care professionals, diving professionals, and educated lay persons.

Health Link MCW - A question and answer format about scuba diving after a blood clot.