Commercial divers are professionals who work underwater to perform various tasks, such as inspecting, repairing, and maintaining structures like bridges, ships, and pipelines. They use specialized equipment, including diving suits and underwater tools, to complete their jobs safely and efficiently. These divers often work in industries like construction, oil and gas, and marine research. To become a commercial diver, individuals typically undergo training and certification programs that teach them essential diving skills and safety procedures. They must also be physically fit and able to handle the challenges of working in underwater environments, including changes in pressure and visibility.