Hauge Aqua services

The circular plastic pens are developed from the wooden frames that kicked off the adventure in the 1970s and -80s. Open net pen production is on a theoretical level a cheap way of producing fish. Oxygen is provided through incoming water, and faeces are carried away by the outflowing water. However, linked to this privilege, the open net pen provides little protection. The fish population is at all times exposed to the open environment. Microorganisms (ex: bacteria, virus, amoeba etc.) and parasites (Salmon louse), common in the wild fauna, may enter the farm and potentially infect the fish population. If the farmed fish become diseased, such microorganisms can cause mortality and risk of transferring disease to neighbouring farms and potentially wild salmon residing in farming areas. 
Hence, what is a distinctive advantage,  - clean water passing through farms, also represents a biological risk.