The scuba diving community is mourning the loss of Hal Watts, known as “Mr. Scuba.” He founded the Professional Scuba Association International, which is the oldest scuba certification agency. Watts set multiple diving records, reaching depths of 390ft and 415ft in the 1960s and 70s. He emphasized safety in scuba diving with his famous saying, “Plan your dive, dive your plan,” highlighting the importance of preparation. His contributions greatly shaped the standards for safe diving practices.