What do you call a divers air tube?

Answer 1

Normal pressurized air is used for Scuba diving. However, you can get mixed gases for SCUBA diving such as Nitrox, which is mixed gases of nitrogen and oxygen. This is used by deep sea diving, but it takes special training.

Answer 2

Scuba divers require a few pieces of equipment in order to breathe under water. Obviously, they will need a tank containing the compressed air. These tanks can vary in size. Attached to that will be the first stage of the system which separates into a few hoses. One hose being the main breathing apparatus and another to the backup. Attached to the second stage is a regulator, which is the piece that actually goes in your mouth and used to breathe through.

Answer 3

Various names:

Tank
Cylinder
Bottle

Answer 4

It depends on the type of diving you'll be doing and how much air you consume. I dive with a high-pressure steel 100 cubic foot tank.

Answer 5

Depends a bit on how deep you dive, but usually just average, regular air that's been a bit filtered and then compressed into tanks.