This episode comes from Pembrokeshire. John Craven takes to the water to find out about the area's boating heritage, painting boats and learning sea shanties along the way. Helen Skelton is foraging on Freshwater West beach and cooking up a seaweed feast. She also meets the team building the ultimate ecohouse using locally sourced materials. Sanjida O'Connell is on Skomer helping to count the Manx shearwaters who call this island home.And Adam Henson is in Cornwall making a special delivery of rare-breed cattle to the Heligan estate, while Tom Heap is looking at what is being done to reduce greenhouse gas emissions on farms after claims that agriculture produces larger quantities of gases than traffic.