Norway is the largest exporter of salmon in the world, with many fish being raised in fish farms. Escaped farmed fish can cause ecological issues, but a pilot project using closed pen tanks is helping prevent this while also utilizing waste for energy production.
Key Points
Norway is the largest exporter of salmon in the world
Farmed fish can escape and mix with the local population, causing ecological problems
Closed pen tanks are being used to prevent farmed fish from escaping and interbreeding with wild salmon
Pros
Closed pen tanks protect farmed salmon from sea lice
Prevent farmed salmon from escaping and interbreeding with wild salmon