An Underwater Breathing Apparatus is a device that allows individuals to breathe while submerged in water. It typically includes a tank filled with compressed air, a regulator to control airflow, and a mouthpiece or mask. This equipment is essential for activities like scuba diving, where divers explore underwater environments. The most common type of underwater breathing apparatus is the scuba system, which stands for Self-Contained Underwater Breathing Apparatus. It enables divers to stay underwater for extended periods, providing them with the necessary air supply to explore marine life and underwater landscapes safely.