Drawing your finger/hand across your throat.
seriously? it is not diving and you don't scuba to breath in air.
Most SCUBA divers dive with compressed air, which is normal atmospheric air compressed into a scuba tank.
A scuba tank typically holds about 11 liters of air at atmospheric pressure.
A scuba diver can purchase many things for scuba diving at the Air Hog online shop. They can purchase dive knives, dive lights, dive computers, and dive bags which will help them in scuba diving.
Scuba divers require increased air pressures in their air tanks while diving because the pressure on their bodies increases.
You can use a scuba tank, but that is it.
Compressed air used for SCUBA should smell like regular air. There may be a slight rubber smell from the regulator. When in doubt, it is safer to get your tank refilled than to dive on contaminated air.
scuba
The vest is simply called a scuba vest. It's to hold your air tank and regulators :)
from holding their breath and ascending.
Scuba Breathing Apparatus.
one percent