Swims underwater to undertake tasks such as seafood gathering, research, salvage and construction.

Performs mechanical, construction, repair and inspection duties using hand tools, cutting and welding equipment and hydraulic or air powered equipment; secures cables or floatation devices to objects to raise them to the surface; dives in diving bells and operates articulated arms to perform tasks; controls equipment at the surface for other divers; carries out other underwater duties such as surveys, searches, blasting and collection of scientific or exploratory samples and operates underwater equipment including video and television camera and sonar gear.

• Works outdoors in most weather conditions from watercraft in sea, lake or river environments. Work may cease due to poor visibility and/or rough seas.
• Carries air tanks and wears protective wet suits and other personal protective equipment including face masks and footwear.

• Medium to heavy work levels.
• Swims constantly in various underwater environments. Occasionally walks about on watercraft before and after dives. May sit when travelling to and from dive sites.
• Uses upper limbs and body to stretch up, across and under on a frequent basis in order to carry out a variety of underwater tasks.
• Occasionally squats, crouches or kneels when on a boat deck. Occasional twisting of the body or neck is needed to carry out underwater work tasks.
• Employees constantly work in sea and fresh water of varying temperatures but use protective equipment such as wet suits, face masks and oxygen tanks.
• Employees frequently lift and carry diving equipment such as air tanks and other materials and equipment underwater depending upon tasks undertaken (e.g. drills or air guns). Bending is required on an occasional basis. Repetitive tasks are occasionally required.
• Driving may be required to get to the site and employees may operate boats. Employees may use a wide range of hand and power equipment but this depends upon diving job tasks.
• Frequently climbs boat ladders in order to get back on board after dives.
• Mental skills necessary include practical, technical, diving, swimming and decision-making skills.

A New Zealand Register Level 4 qualification (ANZSCO Skill Level 3). Divers must: be at least 18 years old, have a current medical clearance from the Diving Hyperbaric Medicine Service, have a Certificate of Competence, issued by the Occupational Safety and Health Service of the Ministry of Business, Innovation and Employment. This must be renewed every 5 years.

There are opportunities for flexibility of movement.