Cool Facts
Self-contained gear. Scuba stands for self-contained underwater breathing apparatus, which means the diver carries everything they need to breathe right on their back. You don't need a tube connected to the surface like old-fashioned diving.
Carry your own air. A scuba set includes a tank full of breathing gas, a harness to hold it, and a jacket or wing-style device that helps you float or sink. All of this gear works together so divers can move around freely underwater.
Pressure matters most. The breathing gas comes out at the same pressure as the water around you, so your lungs don't get crushed or over-inflated. This is what makes scuba so different from holding your breath.
Most popular diving way. Scuba is the favorite method for people who dive for fun and adventure because it gives them freedom to explore and plenty of range underwater. Professional divers use it too when they need to move around a lot.
Strict equipment standards. The scuba harness, buoyancy devices, pressure gauges, and other parts are all precisely designed and tested to keep divers safe while they're exploring the underwater world.