Learning
Training videos from the agencies' official YouTube channels, for study and review before and after a course. Certification requires in-water training with an instructor.
PADI
Official PADI channel · How To seriesGear Assembly
Mask Clear
Regulator Recovery
Equalize
SSI
Official dive SSI channel · Recreational Skills seriesScuba System Assembly
Pre-Dive Check
Mask Clearing - Full Flood
Regulator Retrieval (Arm Sweep)
Neutral Buoyancy (Hovering)
NAUI
NAUI TV · Official NAUI channelNAUI Getting Certified
Become a NAUI Scuba Diver
Scuba Continuing Education with NAUI
NAUI Worldwide: The Definition of Diving
Useful Links
The major dive agenciesPADI
Professional Association of Diving Instructors. Recreational and professional diver training.
padi.comSSI
Scuba Schools International. Recreational, freediving, and extended range training.
divessi.comNAUI
National Association of Underwater Instructors. Nonprofit agency founded in 1960.
naui.orgSDI / TDI
Scuba Diving International (recreational) and Technical Diving International (technical).
tdisdi.comRAID
Rebreather Association of International Divers. Recreational, technical, and rebreather training.
diveraid.comGUE
Global Underwater Explorers. Recreational, technical, and cave training.
gue.comBSAC
British Sub-Aqua Club. The United Kingdom's national governing body for scuba diving.
bsac.comCMAS
World Underwater Federation. The international federation for underwater activities.
cmas.orgDAN
Divers Alert Network. Dive safety and medical information, an emergency hotline, and dive accident insurance. DAN is a safety and membership organization, not a certifying agency.
dan.org