TDI Intro to Tech Technical diving operates with tighter margins, more precise skills, and a different approach to pla...

TDI Advanced Nitrox Standard nitrox certification covers enriched air up to 40% oxygen. TDI Advanced Nitrox picks up fro...

TDI Deco Procedures No-decompression limits define the ceiling of sport diving. The TDI Decompression Procedures course ...

TDI Sidemount The TDI Sidemount Diver course covers sidemount configuration at a technical level. Where the SDI Si...

TDI KISS Air Diluent A closed circuit rebreather recycles your exhaled gas, scrubs the CO2, and maintains an optimum oxyg...