Commercial divers work underwater with scuba gear and use both power and hand tools to accomplish their goals. There are numerous tasks that underwater divers can undertake.
These include but are not limited to setting up explosives under water doing offshore oil and gas exploration and extraction and doing underwater surveys to determine whether oil rigs have cracks or platforms need to be repaired.
They can also install pilings or footings for piers and bridges inspect and repair underwater valves use underwater video and sonar to record or study marine life dive for the purpose of underwater search and rescue salvage and recovery of objects and remove debris that is polluting the water.
According to Ehow.com commercial divers start their careers by spending three years as divers' helpers. They also attend several months of formal diving classes at a diving school that is accredited by the Association of Commercial Diving Educators.
The job prospects for commercial divers are expected to improve over the next decade due to an increased demand in the professional scientific and technical industries.
The U.S. Bureau of Labor Statistics reports that commercial divers make an average wage of approximately $28 per hour and if there are no breaks in their employment they earn an average annual salary of approximately $58000.