| Number seen/Abundance | Date | Location | Comments | Recorded by |
|---|---|---|---|---|
| Uncommon | 2009-09-21 | Eastbourne Pier The pier at Eastbourne. Sandy beach below shingle with some soft bedrock with pools. In addition to the list Mactra stultrom common, as were hydroids (unidentified on the pier structure) |
Narrow red/orange tentacles noticed on a photograph and appear to be this worm (or related species) | Nigel Sawyer |