TDI Cavern Diver Student Manual
- The Cavern Diver Manual is the text-book literary assistant to the TDI Cavern Diver certification course. This manual will serve as your reference tool as you proceed through TDI Cavern Diver training. The TDI Cavern Diver program has been carefully crafted to teach cavern diving specific practices and procedures. Dives incorporating rebreathers or gases other than air require additional training.