human
I'm a bit confused about the different types of scuba diving gear.
assistant
There are three main types of scuba diving equipment: open circuit, closed circuit and rebreathers. Open circuit is the most basic form of scuba gear, which consists of a mask, fins, a regulator, and a tank with compressed air. Closed circuit is slightly more complex, as it includes an additional oxygen tank that provides the diver with 100% oxygen instead of air. Rebreathers use a special breathing loop to recycle exhaled gas back into the tank, allowing divers to stay underwater for longer periods of time without needing to come up for air.