German U-Boat U-869 lies in 230 feet of water ... Sport Diving: An Overview of the Theory and Requirements of Deeper Diving by John Lippmann. New York: Aqua Quest Publications, 1992 Deep Diving ...

The platform used by men and women at the Olympics is a flat, rigid, non-slip surface elevated 10 meters (roughly 32 feet, 9 1/2 inches) above the water ... allowing divers to launch themselves as ...

Unlike scuba divers, who rely on breathing apparatus and oxygen tanks, freedivers take one deep breath ... marine life and open water. Aided with long, slender fins and free of cumbersome ...

Hammerhead sharks can hold their breath to survive almost freezing-cold waters during deep dives ... So how these animals manage to dive into water that drops to temperatures of about 40 degrees ...