Sheppey Cliffs and Foreshore is a 303.6-hectare (750-acre) biological and geological Site of Special Scientific Interest which stretches between Minster and Leysdown-on-Sea in Kent, England.

[3][4][5][6][7] This site exposes Eocene London Clay with well-preserved fossil fauna and flora, which have been studied since the eighteenth century.

London clay was deposited in a shallow sea forming beds up to 200 metres (660 ft) deep at the eastern end.

Each layer has its own flora and fauna, with well-preserved fossils of invertebrates including bivalve and gastropod molluscs, brachiopods and nautiloids, as well as articulated lobsters and crabs, and sometimes insects.

[9] The site is botanically important for the dragon's teeth (Tetragonolobus maritimus) which is found in only a few locations in Britain, and several other uncommon plants occur here, one being bithynian vetch (Vicia bithynica).