Aqua-culture is perhaps one of the direct results of scientific diving. It is a reasonably new field for a group of specialiasing commercial divers. The work is farming with edible marine creatures and later harvesting it for the consumer market. The most common farms to date are oyster, mussel and perlemoen farms. The diver performs mainly set-up and maintenance work on the beds. He will obviously be called on during any tasks that are to be done under the surface of the water.