Longitude (deg): -4.0. Latitude (deg): 52.5. Longitude (deg/min): 4° 0' W. Latitude (deg/min): 52° 30' N. Vice county name: Cardigan. Vice county no.: 46. Country: Wales. Identified by: Malcolm Storey. Comment: dead, washed up on sand near high water mark. Detail to note: vivid blue margin. Category: standard photograph or close-up. Real world width(mm): 0. Photographic equipment used: Canon EOS400D digital SLR + Sigma 50mm 1:1 macro lens.