Technical Diving International (TDI) is the world's largest and most innovative technical scuba training agency. Established in 1994, TDI pioneered modern technical diving education, being the first agency to offer accessible nitrox training (no dives required), mixed-gas (trimix) programs for recreational-level divers, advanced overhead-environment courses outside traditional cave formats, and early rebreather training. TDI emphasizes rigorous prerequisites, modular progression (focusing on one major skill per course), real-world application, high instructor standards, and the use of cutting-edge materials with eLearning options. Courses push beyond recreational no-decompression limits, enabling deeper, longer, or more complex dives in open water, wrecks, and caves — all while prioritizing safety and diver self-reliance.
We specialize in Closed Circuit Rebreather (CCR) instruction on the Hollis Prism2 and M3S Triton rebreathers.
Technical Diving International (TDI) is the world's largest and most innovative technical scuba training agency. Established in 1994, TDI pioneered modern technical diving education, being the first agency to offer accessible nitrox training (no dives required), mixed-gas (trimix) programs for recreational-level divers, advanced overhead-environment courses outside traditional cave formats, and early rebreather training. TDI emphasizes rigorous prerequisites, modular progression (focusing on one major skill per course), real-world application, high instructor standards, and the use of cutting-edge materials with eLearning options. Courses push beyond recreational no-decompression limits, enabling deeper, longer, or more complex dives in open water, wrecks, and caves — all while prioritizing safety and diver self-reliance.
We specialize in Closed Circuit Rebreather (CCR) instruction on the Hollis Prism2 and M3S Triton rebreathers.
