Sculptors have drawn the shell line with the chalky remains of the common whelk, or buckie, Buccinum undatum. Shellcraft artists have punctuated the line with a crown of bleached common starfish, Asterias rubens, and a necklace of purply ridged common cockles, Cardium edule. The common whelk is found on muddy gravel or sand, on the lower shore and below; the common starfish inhabits the lower shore; the common cockle is found in the sand or sandy mud of the middle and lower shore. They all arrive here with the shingle, riding the currents and longshore drift.