Another sp of worm whilst digging the sands at low tide on the lower shore.
No interactions present.
I am not entirely uncertain of this Graham. These photos are of the underside only. Do you have a topside view and some more observation detail?
See also http://www.ispot.org.uk/node/366153
Edit - added 'not', sorry!
THREE MARINE PROJECTS
Yes, much more comfortable with Leslie's ID.. A change of title perhaps Graham?
Lat/Lng: 51.3814, 1.3139
OS grid ref: TR306699