Performed by machineries known as dredgers or dredges, the task of dredging is essentially an excavation, which is done underwater.
While used for everything from the harvesting of seafood from the sea floor, to managing the flow and balance of waterways, the most common uses for dredging are in the mining and construction industries.
The machinery used can vary between operators and the type of work involved, but essentially involved underwater digging equipment, capable of digging up the floor beneath the water. These dredging tasks may be carried for reasons such as deepening the waterway, or to retrieve the material from the bottom and process it for minerals and such.
Operators of dredges are usually subcontractors, booked to for dredging work that will often be crucial to the project at hand. Dredgers often travel to remote locations where their services are required.