Commercial divers inspect, repair, install, and remove structures, equipment, and items that are underwater in lakes, rivers, oceans, and other bodies of water. they also might take photographs or video of things found under the water. Drilling companies, police departments, construction companies, engineering companies, salvage companies, shipyards, and many other types of businesses hire commercial divers for full-time and part-time work. some might hire commercial divers who work for themselves as independent contractors. In all cases, commercial divers work within a collaborative environment, working closely with a surface team that remains above the water and sometimes working with dive partners under the water. Commercial divers travel to sites across the nation and often perform work in extreme and dangerous conditions, ultimately reporting to the dive team supervisor while they work.