The snorkel lets you breathe
The snorkel lets you breathe at the surface without raising your head from the water, and should be no lesser than 30 cms in length. The weight belt helps you maintain buoyancy so you should consider getting one if you?re a beginner.
Diving suits like Wetsuits and Drysuits provide thermal insulation and prevent complications such as hypothermia. Remember that water conducts heat 25 times faster than air from the body. So, choose a suit depending on how warm or cold your diving water is going to be.
Scuba Sets:
There are two main types of scuba sets ? open-circuit and closed-circuit.
Most scuba divers use standard air – 21% Oxygen, 79% Nitrogen ? for their open-circuit scuba sets, which is much more cost-effective than using mixtures such as heliox and trimix.
the jump manual