Approximate locations sampled by pump-scoop dredge for the clam stock assessment in June 2015 and revisited in January 2016 (white circles). The northern-most site is Holes Bay (closed site), the westerly site is the area around Holton Mere (high intensity fishing), and the southerly site is Wytch Lake (low intensity fishing). The small black circles indicate SIFCA fishing sightings during 2015. Sampling locations in Wytch Lake are within the intertidal. The locations in the UK and on the UK's south coast are inset.