How SCUBA Diving Works

Deepest Dives

The record for the deepest SCUBA dive was set in 2014 by Egyptian army officer Ahmed Gaber, who reached a depth of 1090 feet (332 meters). This dive required extensive preparation and showcased the challenges of deep diving, such as the need for a 15-hour ascent to avoid decompression sickness. Most recreational dives use compressed air, but deeper dives may require special gas mixtures to mitigate risks like nitrogen narcosis 1.

   

Special Mixtures

Special gas mixtures like nitrox and heliox are used in technical diving to manage the effects of deep-sea pressure. Nitrox, which has a higher oxygen content than regular air, helps offset nitrogen narcosis, while heliox, a mix of helium and oxygen, is used for very deep dives. Gary explains that these mixtures are not commonly needed for recreational diving, but they are crucial for extreme conditions 1.