In his follow-up to The End of the Line: How Overfishing is Changing the World, the environmental campaigner chronicles how determined individuals are proving that the crisis in our oceans can be reversed. We need to step aside and let nature repair the damage: whether it is the overfishing of bluefin tuna in the Atlantic or the destruction of coral gardens by dredgers in Lyme Bay. Trawling and dredging create more CO2 than the aviation industry and damage vast areas of the continental shelves, stopping them soaking up carbon. We need to fish in different ways, where we fish at all. Charles Clover is Executive director and co-founder of the Blue Marine Foundation. In conversation with Andy Fryers, Sustainability Director at Hay Festival.