International Diving Educators Association (IDEA)
www.idea-scubadiving.com

National Association for Cave Diving (NACD)
www.safecavediving.com/default.asp

National Association of Underwater Instructors (NAUI)
www.naui.org

National Speleological Society Cave Diving Section (NSSCDS)
www.nsscds.com

Professional Association of Diving Instructors (PADI)
www.padi.com

Profesional Diving Instructors Corporation (PDIC)
www.pdic-intl.com

Scuba Diving International (SDI)
www.tdisdi.com

Scuba Schools International (SSI)
www.ssiusa.com

YMCA Scuba
www.ymcascuba.org

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