A scuba diver is a person who uses a self-contained underwater breathing apparatus (SCUBA) to explore underwater environments. This equipment allows divers to breathe while submerged, enabling them to observe marine life, coral reefs, and underwater landscapes. Scuba diving can be done for recreation, research, or professional purposes. To become a scuba diver, individuals typically undergo training and certification through organizations like PADI or NAUI. Training includes learning about diving techniques, safety procedures, and equipment usage. Divers must also be aware of potential risks, such as decompression sickness and underwater navigation challenges.