Advanced Diving 3x: Hal Watts/ Roz Lunn/ DAN

PD35 <audio>

C-BLOCK: Interview with Donna M. Uguccioni, MS Diving Physiologist/Research Coordinator DAN.
D-BLOCK: Rosemarie Lunn discusses wreck diving in the St. Lawrence.
E-BLOCK: BTS Interview with Hal Watts of 40 Fathoms Grotto and PSA.