How to calculate a scuba weight belt::The amount of weight required to safely descend at the start of a dive and to maintain a safety stop at the end of a dive is not limited to what is installed on a weight belt. Proper weighting depends on many variables such as exposure suit type and thickness, tank composition and diver experience, in addition to body weight:
Plane Under Water: Several things that aren't right here: Airplane underwater, scuba guy floating in front of plane. He kind of looks confused. I mean as confused as someone in full SCUBA gear viewed from the side can i suppose.