| Number seen/Abundance | Date | Location | Comments | Species |
|---|---|---|---|---|
| 2 | 2010-06-06 | PorthKerris Porthkerris dive centre, in the reef just off the shore, |
seen floating in 8 metres of calm water, first one we saw was about 1cm at the widest point of the bell, about 15minutes later we saw the 2nd one, it was about 11cm at the widest point of the bell. | Pelagia noctiluca |