Amateur Naturalist: Upstream, Downstream
- Episode aired Apr 14, 1985
![Patrick Edlinger in National Geographic Explorer (1985)](https://m.media-amazon.com/images/M/MV5BZWU2YmMzNTAtN2JkZi00NjM2LTk2OTctM2M4YzExY2FhMzUwXkEyXkFqcGdeQXVyMTM2OTQxOTg1._V1_QL75_UX190_CR0,2,190,281_.jpg)
Self-trained naturalist Gerald Durrell explores the River Wye in Wales and examines its creatures.Self-trained naturalist Gerald Durrell explores the River Wye in Wales and examines its creatures.Self-trained naturalist Gerald Durrell explores the River Wye in Wales and examines its creatures.