All week on Farming Today we're looking at the salmon industry - from wild populations to salmon farming. Scottish salmon is the UK’s biggest fresh food export with overseas sales hitting £614 million in 2021, up 36 per cent from 2020. But it can be a controversial topic and we hear from both sides of the fence - the economics of the industry and the environmental impact and welfare concerns. With rising costs of feed, egg farmers are making a loss. There are fears many farmers will just get out of the industry - leaving consumers to pay more. Presented by Charlotte Smith and produced for BBC Audio by Caitlin Hobbs