Caz Graham visits Europe's largest wild eel fishery on Lough Neagh in Northern Ireland to find out about the slippery and mysterious fish. As there is no domestic market for eels, the fishery exports 700 tonnes of live eels each year to Holland and France. However, a decline in eel numbers and more young people moving away from the Lough raises a question over this industry's future.
Presenter Caz Graham. Producer Ruth Sanderson.