Longitude (deg): -2.4. Latitude (deg): 50.5. Longitude (deg/min): 2° 30' W. Latitude (deg/min): 50° 30' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Living animal. Identified by: Ian Smith. Comment: on hydroid, on Sargassum muticum, on floating pontoon, . Category: standard photograph or close-up. Image scaling: enlarged. Real world width(mm): 0. Background: black background. Where photo was taken: In a thin aquarium. Orientation: Facing to bottom. Photographic equipment used: Canon EOS400D digital SLR with Tamron SP AF Di 90mm Macro 1:1 lens.