It is not advisable to dive with an ear infection. A blockage in the ear canal can be painful if you can't properly equalize the air spaces within the ear, and could cause permanent inner ear damage....
220 feet is about 67 metres. The pressure of air at this depth is about 8 bar (or atm). Using standard air the partial pressure (20%) of oxygen is 1.6 bar. This is the boundary where oxygen begins to...
In 1942, Hans Hass, outfits a research vessel, The Sea Devil, for scuba expeditions and becomes the first person to dive In the Red Sea and on Australia's Great Barrier Reef using SCUBA.