Longitude (deg): -2.4. Latitude (deg): 50.5. Longitude (deg/min): 2° 30' W. Latitude (deg/min): 50° 40' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Colony. Identified by: Malcolm Storey. Comment: yellow form - on vertical faces of old concrete blocks beside Botryloides leachi, exposed at low tide. Category: standard photograph or close-up. Image scaling: enlarged. Real world width(mm): 0. Photographic equipment used: Canon EOS400D digital SLR with Tamron SP AF Di 90mm Macro 1:1 lens.