| Number seen/Abundance | Date | Location | Comments | Species |
|---|---|---|---|---|
| approx 100 | 30/05/2011 | Barmouth, Wales On the beach at the water's edge we spotted lots of Valella Valella (by the wind sailor) jellyfish washed up by the stormy weather |
washed up on the beach, varying sizes - smaller ones looked like mussel shells at first | Velella velella |