Lowlands

In the third episode of his journey, Iolo Williams explores the largely man-made landscape of Wales's lowlands and some of the 1,700 miles of coastline. As part of his personal pick of the best of Welsh landscape and wildlife, Iolo observes a wood warbler as it performs its song flight amongst the oak trees of Coed Crafnant, he looks at the Dee estuary from the point of view of a local fisherman - meeting some seals along the way - and goes underwater off the Llyn Peninsula to see the variety of marine creatures living just offshore.