This paper studies the foodweb on Flat Holm Island, an uninhibited island in the Bristol Channel. There is no pier on Flat Holm, so landing on the island is part of the adventure.
Flatholm has a very large tidal range of about 11m. So after landing prepare for being on the Island a while.
Flat Holm is the southernmost point of Wales, the island features a 17th century Lighthouse, fortifications form various wars, enormous (17t) cannons lying around, a former Cholera hospital and even a Roman lead mine. The first radio message over open water was broadcast from here by G.E.C. Marconi. It said "Are you ready?"