Longitude (deg): -5.0. Latitude (deg): 50.4. Longitude (deg/min): 5° 0' W. Latitude (deg/min): 50° 30' N. Vice county name: West Cornwall. Vice county no.: 1. Country: England. Stage: Living animal. Identified by: Malcolm Storey. Comment: 2 living animals partly buried in sand, on lower shore. Detail to note: the ridges on either face of the groove. Category: macro-photograph. Image scaling: highly enlarged. Real world width(mm): 0. Photographic equipment used: Canon EOS400D digital SLR and MPE 65mm x1 to x5 macro lens.