Crab fishermen, Port Isaac, Cornwall.

Calum Greenhalgh and his son Jack working aboard their boat 'Mary D'. Calum and his wife Tracey own and run the 'Fresh from the Sea' Fish Shop in Port Isaac, Cornwall, U.K.

Calum has been a fisherman in Port Isaac for 24 years.

"The future is not just putting on a pair of boots and oilskins and getting out there. It's the whole conservation thing and working with the tourist industry, that's the future. You can't just go out and catch as much fish, whatever size, that's the past, that's gone."

Calum Greenhalgh.