i want to know what is scuba diving
As you have known it requires water and the diver utilizes  a self-contained underwater breathing apparatus (scuba) which is completely independent of surface supply, to breathe underwater.
interesting tell me more about it
Like i said their apparatus is completely independent of surface supply, hence they  carry their own source of breathing gas
how do breathing gas look like does last long
Well, they use compressed air, allowing them greater independence and freedom of movement. this makes it better for them that  surface-supplied divers
okey am eager to know more
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
provide more efficient propulsion. A short breathing tube called a snorkel allows the diver to breathe at the surface while the face is immersed. Snorkelling on the surface with no intention of diving is a popular water sport and recreational activity.
Diving modes Scuba diving.
Scuba diving is diving with a self-contained underwater breathing apparatus, which is completely independent of surface supply. Scuba gives the diver mobility and horizontal range far beyond the reach of an umbilical hose attached to surface-supplied diving equipment (SSDE).
Scuba