Counts = counts/sample = #/0.16 m^2. Sampled with stirring box 40x40 cm.The eatable cockle, Cerastoderma edule was quantitatively collected at monthly intervals (appr. new moon) from a series of stations along a transect perpendicular to the shore line. Replicates of 0.16 m2 sand samples were excavated to 15 cm depth using a stirring box and the sediment was sieved on a 1-mm screen. All retained cockles were immediately measured with a vernier calliper (resolution 1mm)