| Number seen/Abundance | Date | Location | Comments | Species |
|---|---|---|---|---|
| P | 2003-05-25 | Meadowsfoot Beach Mothecombe, Devon |
100 per square metre, along strand line, individuals on rocks. 0.7 - 13mm diameter. Photos and samples taken. | Velella velella |
| P | 2002-06-11 | Criccieth Criccieth |
Tens of individuals in detritus at edge of water at LWS | Velella velella |
| P | 2002-06-12 | Hell's mouth beach Hells Mouth or Porth Neigwl |
10,000s of individuals, the beach is about 3 miles long, walked almost a mile from car park to site & there was a continuous band along the strand line of dead ones. In the water there were also 100s of possibly live ones close to the water's edge | Velella velella |
| P | 2002-06-14 | Porth Dafarch Porth Dafarch, Anglesey |
Thousands on the strandline and hundreds in the water. | Velella velella |
| P | 2002-06-14 | Rhosneigr Rhosneigr, Anglesey |
Thousands on strandline and hundreds in water. | Velella velella |
| P | 2002-06-15 | Porth Trecastell Porth Trecastell, Anglesey |
Thousands of dead individuals washed on rocks both in the cove and on the rocks to the north and south. | Velella velella |