Farm salmon fishing in Norway. Norway is the biggest producer of farmed salmon in the world, with more than one million tonnes produced each year Stock Photo - Alamy
The salmon you buy in the future may be farmed on land - BBC News
From the Archive December 2018: Norwegian salmon farming costs jumped 5% in 2017 | IntraFish
Land-based salmon farming in Norway – laws and regulations
As Wild Salmon Decline, Norway Pressures Its Giant Fish Farms - The New York Times