Mr Mulraney wove the film clips together with Mr Laity's spoken memories about dredging the Fal estuary around St Mawes aboard the George Glasson working boat, to create the film From the Coulch.

It claims as boats break up there is a risk microplastics from the wrecks enter the food chain. The group says it has been told about more than 130 boats in just two months, but there could be ...