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SDI logo with a stylized diving mask.

Are you a Research diver? This professional program might be what you need.

Learn more

Looking to go deeper for longer TDI might be for you.

Logo of Technical Diving International featuring twin dive tanks and a globe map in the background.

CMAS is our all-in-person course; it is more involved than our other courses.

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Select the Agency Select your course

New to diving? SDI is where you start

AAUS logo featuring a circular emblem with aquatic symbols and the text "American Academy of Underwater Sciences."

CMAS E-Learning Courses comming soon

Digital interface with e-learning icons and a hand interacting with a virtual screen
CMAS logo with stylized mermaid and text 'Confédération Mondiale des Activités Subaquatiques, World Underwater Federation'
ERDI logo with the text 'Emergency Response Diving International' and a globe inside a red and black oval background.

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+1 (203) 806-0027

806 Sherman Avenue, Hamden, CT 06514