| Number seen/Abundance | Date | Location | Comments | Recorded by |
|---|---|---|---|---|
| 1 | 2001-08-01 | Polhorn Cove, Whitsands Bay, Cornwall |
Single individual on barnacle covered rock. | Dave Peake |
| 3 | 2004-09-18 | Batten Bay Batten bay, Plymouth |
Marina Marltby | |
| 1 | 2005-05-12 | Blackstone Rocks Blackstone Rocks, Wembury Beach, Plymouth |
Attached to underside of rock in a rockpool | Faye Wood |
| 20 | 2005-06-14 | Epple Bay, Birchington, Kent |
In rockpool, filter feeding | Lee McPherson |
| P | 2005-05-24 | Mothecombe Beach Mothecombe Beach near Erme Estuary, South Devon |
Seen by group 7, years 4-6, Elizabeth Bone, Lily Battershil, Rosalind Brown, Dolores and Emily Steer | Holbeton School |
| P | 2005-05-24 | Mothecombe Beach Mothecombe Beach near Erme Estuary, South Devon |
Seen by group 6, year 3,5&6, Jack, Isaac, Tom Rogers, Francis and Anthony | Holbeton School |
| P | 2005-05-24 | Mothecombe Beach Mothecombe Beach near Erme Estuary, South Devon |
Seen by group 5, year 4-6, Jacob P, Joe, Piran Speed, Toby and James | Holbeton School |
| P | 2005-05-24 | Mothecombe Beach Mothecombe Beach near Erme Estuary, South Devon |
Seen by group 1, year 4-5, Rory, Moses Sherrel, Jake Lann, Sturan and Dermot | Holbeton School |
| 4 | 2005-09-26 | Fowey estuary Fowey estuary, marina, Cornwall |
Large specimens inside tyre | Judith Oakley |
| Present | 2005-09-28 | Harbour walls of St Michael's Mount, Marazion, Cornwall. |
Many seen growing on the harbour walls of St Michael's Mount. | Lesley Sedgeman |
| Present | 2005 | Southend foreshore, Southend-on-Sea |
Large amounts seen over the past 3-4 years along the foreshore and in the creeks and backwaters. | Paul Gilson |
| 17 | 2006-06-27 | Jennycliff Beach, PLymouth |
Attached to rocks | |
| common | On rocks | |||
| 2 | 2006-06-27 | Jennycliff Beach, PLymouth |
On rocks | Newton Ferrers Primary School |
| None | 2007-01-23 | Branscombe Bay, Devon |
2 Shells were found in rock pools. | Milly Hatton-Brown |
| 1 | ||||
| Common | 2007-07-14 | Jennycliff |
Jayne Evans | |
| many | 2007-09-16 | Yealm Estuary |
On sediment, low tide | Jon Parr |
| Frequent | 2008-01-12 | Mount Batten, Plymouth |
19 counted by this group of 3 in an hour | Seashore Safari |
| 1 | 2007-05-16 | Oxwich Point Oxwich Point, Gower |
Attached to rock | Judith Oakley |
| Frequent | 2008-04-18 | Mount Batten N50:21:25 W4:07:40 |
Boulders / crevices open rock | Seashore Safari |
| 2 | 2008-03-23 | Calshot beach Calshot beach, Fawley, Southampton |
Lying on sand at low water, alive | Jenny Mallinson |
| many | 2008-06-22 | Yealm Estuary |
Jon Parr | |
| 1 | 2008-07-19 | Blackstone Rocks Black stone rocks |
on the top of a rock near the lower shore | Cat Ridout |
| 3 | 2008-07-24 | Blackstone Rocks Blackstone rocks |
all found in one gully approx 3 feet apart | Cat Ridout |
| Abundant | 2008-08-26 | Kingsand Beach, Cornwall. |
Alot of these scattered about on the rocks. Very common and between 6 and 10cm in length. | Amelia Bridges |
| Common | 2008-10-17 | Sharrow Point, Whitsand Bay, Cornwall 50:19:52N 4:12:48W |
Found on large rocky outcrops, mid-low shore | Milly Hatton-Brown |
| Common | 2008-10-17 | Kingsand |
Living on large rocks mis- low shore. | Milly Hatton-Brown |
| 5 | 2008-10-14 | Dog Beach, Looe, Cornwall |
All attached to rock faces, 3 on the middle shore and 2 on the lower shore. | Amelia Bridges |
| 20+- | 2009-09-04 | Pegwell Bay, Kent Ex hoverport on mudflats |
Cemented to old hovercraft slipway | David Rolfe |
| Occasional 5 - 40% | 2009-09-29 | West Mud West side of river Tamar, opposite dockyard, between Millbrook and St John\'s Lake |
In mud/gravel patches between the eelgrass | John Hepburn |
| lots! | 2010-05-02 | Royal William Yard Royal William Yard, Stonehouse, Plymouth Inside the basin/ harbour and on the seward walls facing Mayflower Marina |
seen attached to inner and outer walls. Visible as pedestrian and canoeist | Sally Richards |
| 1 | 21/03/2011 | Hastings Shingle and rocks with some rockpools and sandy areas |
Single specimen found | Nigel Sawyer |
| 20 | 08/04/2011 | Mount Edgecumbe The rocky shore around the point of Mount Edgecumbe. |
Bex House |