It is in everybody's interest to keep the waters where we are working clean and healthy. By a combination of measures, we minimise the potential for discharges.
The impact of our farms on the seabed is first estimated, based on predictive models that take account of the depth under the cages and the currents, and through environmental risk assessments. Then it is monitored on a regular basis to assess potential effects on the seabed. Fallowing of sites is a routine practice, to allow regeneration of the seabed under the cages.
It is in our own interest, and that of our neighbours, to keep the waters where we are working clean and healthy. Our employees are aware of the importance of keeping discharge below the carrying capacity. They are supported by good documentation and training in farm and feed management.
We minimise the potential for discharges through a combination of measures - using feeds with good physical quality; avoiding over-feeding, and thus reducing feed waste; and by using nutritious and highly digestible feeds that achieve the highest fish growth with the least amount of feed and lowest amount of faeces. Increasing use is being made of computer controlled feeding systems and underwater cameras to monitor fish feeding. Managing the biomass of fish on the farm through appropriate stocking rates also has environmental benefits.