A Self-Contained Underwater Breathing Apparatus, commonly known as scuba, is a device that allows divers to breathe underwater. It consists of a tank filled with compressed air, a regulator to control airflow, and a mouthpiece or mask for inhalation. This equipment enables divers to explore underwater environments for extended periods without needing to surface for air. Scuba gear is essential for various activities, including recreational diving, underwater photography, and scientific research. The technology has evolved over the years, improving safety and efficiency, making it accessible for both beginners and experienced divers.