Scuba diving is a form of diving that uses oxygen from an oxygen tank to supply breathing, allowing the diver to remain underwater for extended periods of time.

Scuba diving safety measures include regular inspection and maintenance of diving equipment, diving with a diving partner, adhering to a dive plan, maintaining good diving technique and controlled breathing, and maintaining appropriate dive depth and time when necessary.

Scuba diving requires appropriate training and qualifications, usually through diving courses such as those offered by organizations such as PADI (Professional Association of Diving Instructors) or SSI (Scuba Schools International). These courses cover diving knowledge, safety procedures, equipment use and scuba diving techniques.

Risks of scuba diving include drowning, air bubble disease (an illness caused by excessive gas absorption), oxygen or nitrogen toxicity from improper depth and timing, and other risks associated with the underwater environment, such as harm to marine life or malfunctioning diving equipment wait.

The best places to scuba dive depend on personal preference and diving experience. Some popular diving locations include tropical waters such as the Caribbean Sea, coral reefs in Southeast Asia, and some famous shipwrecks or deep-sea dive sites.

The main equipment for scuba diving includes cylinders (oxygen supply), diving suits (wet suits, diving masks, diving shoes, etc.), life-saving equipment (buoys, life vests, etc.), diving computers, diving knives, etc.