The job of a commercial diver is to go underwater and carry out certain tasks. These tasks will depend on the employer's business. There are different types of divers, including:

Offshore divers are the most common type of commercial divers. They work for oil and gas companies that have offshore operations. Their job is to help explore, maintain oil platforms, and build underwater structures used in oil and gas production.

The job is very demanding and it is even considered by some as the most dangerous diving job.

A new diver will have a better chance in starting a career in commercial diving by doing offshore diving. This can also offer a lot of opportunities to travel abroad.

Onshore divers are more concerned with engineering projects. Here, qualified divers work mostly in freshwater such as rivers, lakes, and even dams. Divers help survey or build bridges and dams.

This is not as difficult as offshore diving because divers don't have to spend long hours on ships. Onshore divers can go home after a day's work.

Naval divers are the military counterparts of offshore divers. However, they are very different from military divers. Naval divers inspect and clean ships and boats. They may also aid in inspecting underwater wreckage and the recovery of crashed planes and ships.

HAZMAT divers have a more dangerous job than other commercial divers because they deal with hazardous materials. These divers are at risk of contracting diseases and other accidents that might put their lives in danger, which is why employers use safety measures like vaccinations against tetanus, hepatitis, and other diseases; specific places for decontaminating the diver and equipment after a dive; and contingency plans if the diver encounters a problem while underwater.

The work of a HAZMAT commercial diver includes the following:

• Recovering bodies and lost objects

• Maintenance of underwater valves

• Repairing of pipelines

• Maintenance of pumping equipment to improve landfill sites

• Welding inside sewers

• Pollution control work

Scientific divers study underwater species. These divers are also scientists. They usually work with government agencies and universities since they collect underwater samples used in research programs.

Media divers perform underwater filming and photography. They usually work for movie and television companies. They must be trained camera operators and are responsible for planning, researching, preparing equipment, and capturing the shot. This is a job that requires a lot of multi tasking.