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Certification Agencies

CMAS Confederation Mondiale des Activites Subaquatiques

GUE Global Underwater Explorers

IAFD International Association of Free Divers

IANTD International Association of Nitrox and Technial Divers

NACD National Association for Cave Diving

NASDS National Association of Scuba Diving Schools

NAUI National Association of Underwater Instructors

NSS-CDS National Speleological Society - Cave Diving Section

PADI Professional Association of Diving Instructors

PDIC Professional Diving Instructors Corporation

SSI Scuba Schools International

TDI Technical Diving International