Advanced Diving 3x: Hal Watts/ Roz Lunn/ DAN
PD35 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.