Aggregation - under rock at edge of pool

Description:

Longitude (deg): -2.4. Latitude (deg): 50.5. Longitude (deg/min): 2° 20' W. Latitude (deg/min): 50° 30' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Worm. Identified by: Malcolm Storey. Comment: "on mud under, and on underside of, rock, at edge of tidal pool". Other taxa shown: Prosorhochmus claparedii (short orange ribbon worm in foreground). Category: standard photograph or close-up. Where photo was taken: In situ. Photographic equipment used: Canon EOS400D dSLR with Tamron SP AF Di 90mm Macro 1:1 lens.