Divers Alert Network
- http://www.diversalertnetwork.org/
- 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.
Diving Medicine Online
- http://scuba-doc.com/
- Comprehensive information about diving and undersea medicine for the non-medical diver, the non-diving physician and the specialist. Online physicians and consultants answer questions about diving medical problems.