SDI is the fastest growing recreational certification agency in the world. Courses range from kids snorkeling programs, through Open Water instructor, taught in over 15 languages.
SDI was created in 1999 and grew out of the success of our sister company TDI, which specializes in the more advanced disciplines of dive training.
Both students and instructors have embraced the no nonsense approach that the SDI training system offers. We have streamlined the course materials to let students study the essential academics with an emphasis on practical diving skills learned in both the pool and open water environments. SDI is the only agency to require students to be taught with modern dive computers from the onset of training.
SDI course materials are state-of-the-art; the materials are lavishly illustrated with photography and graphics.
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