Scuba diving is where a diver goes underwater using a breathing apparatus which independent of a air support system separate from air above water.
I have never been scuba diving before! I have always wanted to go.
Scuba divers sometimes use additional tanks or cylinders for decompresion gas or to use when an emergency occurs.
That's good they shpuld always have a back up plan!
There are closed circut or semi closed rebreather systems which allow people to breath recycling of breathed out gases.
I know we breathe out carbon dioxide which is toxic so thats good that they don't breathe it back in.
The volume of gas used compared to open circuit versus smaller cylinder may be used for an equivalent on dive duration.
I know a lot of gas can fit in a small volume when under pressure.
its benefit of reduced nitrogen intake during repetitive dives. Open circuit scuba systems discharge the breathing gas into the environment as it is exhaled, and consist of one or more diving cylinders containing breathing gas at high pressure which is supplied to the diver through a regulator. They may include additional cylinders for range extension, decompression gas or emergency breathing gas. Closed-circuit or semi-closed circuit rebreather scuba systems allow recycling of exhaled gases. The volume of gas used is reduced compared to that of open circuit, so a smaller
Scuba diving
Scuba diving is a mode of underwater diving where the diver uses a self-contained underwater breathing apparatus (scuba), which is completely independent of surface supply, to breathe underwater. Scuba divers carry their own source of breathing gas, usually compressed air, allowing them greater independence and freedom of movement than surface-supplied divers, and longer underwater endurance than breath-hold divers. Although the use of compressed air is common, a new mixture called enriched air (Nitrox) has been gaining popularity due to