DEMA -- Diving Equipment & Marketing Association -

IDEA - International Diving Educators Association -

NACD - National Association For Cave Diving -

NAUI - National Association of Underwater Instructors - ...The National Association of Underwater Instructors has always been in the forefront of the effort to make scuba divers more aware of the need for quality diving education and increased safety. A very comprehensive site offering information on educational courses, programs, training classes and seminars.

NOAA - National Oceanic and Atmospheric Administration -

PADI - Professional Association of Diving Instructors -

PDIC - Professional Diving Instructors Corporation -

SSI - Scuba Schools International -

USCG - United States Coast Guard -

YMCA Scuba Program - Very informative site. Will benefit new divers to advanced divers. The YMCA provides community-oriented education for divers and instructors based on the principles of the YMCA triangle: the Spirit, the Mind and the Body.