A Commercial Diver performs underwater tasks such as inspection, repair, and construction, playing a crucial role in industries like marine engineering, oil and gas, and underwater salvage. Key responsibilities include assessing underwater conditions, operating diving equipment, and ensuring safety. Required skills include strong physical fitness, scuba certification, and teamwork. Typically working in challenging environments like offshore rigs or underwater sites, Commercial Divers collaborate with engineers, project managers, and marine biologists. Career progression can lead to supervisory roles, specialized diving techniques, or project management positions.