| Number seen/Abundance | Date | Location | Comments | Species |
|---|---|---|---|---|
| Millions, even billions possibly | 2009-05-22 | Gunwalloe Church Cove, Gunwalloe, Lizard; and Poldhu Cove, Mullion, Lizard. Both small sandy coves between rocky cliffs. |
Dense masses stranded on foreshore, in irregular lines, both at Poldhu Cove and at Church Cove, Gunwalloe. More coming in with tide / small waves, looking like an oil-slick. Deep blue colour, fresh-looking - though strong \\\"fishy\\\" smell indicating rapid decay setting in. Gulls feeding voraciously on them at water\\\'s edge. Mostly tiny individuals, a few mms long, but a very few larger specimens up to about 5cms. Sails of all larger specimens we noted were set at \\\"NE-SW\\\" direction, looking from above. None noted at Kennack Sands later same day, on east side of Lizard. | Velella velella |