In 1998 I completed all four classes toward NSS-CDS Full Cave certification. Between Intro to Cave and Apprentice Cave levels I trained in deep diving with Hal Watts who holds the worlds record deepest dive on air at the Forty Fathom Grotto in Olala, Fl. I became efficient in planning and executing air dives to 240 feet freah water. I did my cave training with Bill Dooley who remains to this day THE VERY BEST diver I know. I did this training at Ginny Springs, Peacock Springs, Cow Springs, and other central Florida springs. I also got my third level of Nitrox certification (IANTD Technical Nitrox) and my dry suit training with Bill. I plan to do Tri-mix training with Hal at some time. Nikon N70, Sensia 100.