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What are the different types of scuba diving?
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1.  Surface Supplied Diving (SSD) – This is a type of diving where you are supplied with air from an external source such as a tank or a compressor.
2.  Self-Contained Diving (SCD) – This is a type of diving where you carry your own supply of breathing gas and use it for longer periods of time underwater than in surface-supplied diving.
3.  Nitrox Diving – Nitrox is a form of enriched oxygen used in recreational diving, allowing divers to stay down longer without the risk of decompression sickness.
4.  Snorkeling – Snorkeling involves using a mask and tube to breathe while swimming on the surface of the water.