An aquaculture company operates several open-net marine pens in a Scottish sea loch to cultivate Atlantic salmon (Salmo salar).
Describe how the operators can maintain optimum dissolved oxygen levels and prevent the water within the marine pens from becoming stagnant.
Explain two different methods the operators can use to protect the salmon from predators such as seals and fish-eating birds.
Suggest two measures the operators can take to prevent the outbreak and rapid spread of diseases and parasites in the pens.
Explain how the operators should manage the feeding of the salmon to ensure rapid growth while preventing organic pollution of the seabed.
