Scuba-Do!
May, 1971
Not since NOAH set off in the ark has man been so preoccupied with water. Ecologically, scientifically and recreationally, the oceans have increasingly become a focal point for our energies. And with good reason; the sea covers over 70 percent of the earth and its depths constitute the largest uncharted frontier this side of outer space. Over the centuries, diving devices have ranged from the primitive (hollow reeds) to the highly advanced (a closed-circuit rebreather system that allows the wear...
