Charles Clover chronicles how determined individuals are proving that the crisis in our oceans can be reversed, with benefits for both local communities and entire ecosystems. 'Rewilding the Sea' celebrates what happens when we step aside and let nature repair the damage: whether it is the overfishing of bluefin tuna across the Atlantic, the destruction of coral gardens by dredgers in Lyme Bay or the restoration of oysters on the East Coast of America.