| Number seen/Abundance | Date | Location | Comments | Species |
|---|---|---|---|---|
| 11 | 2004-07-07 | Lleyn Peninsula Between Porth Widlin and Maenmellt. Lleyn Peninsula, N. Wales. |
groups of three, breaking surface, 2 adults with juvenile mulling about / feeding | Phocoena phocoena |
| 4 | 2004-07-15 | Penrhyn Mawr Bewteen Maenmellt and Porth Iago. 1600 Hrs (Penrhyn Mawr) |
3 adult 1 juvenile. came along side boat (almost leapt over it. Traveling south on ebb tide | Tursiops truncatus |
| 1 | 2004-07-28 | Porth Ysgarden Off Porth Ysgarden, Tudweiliog |
1 mile offshore. amongst large number of Lions Mane jellyfish or Cyanea lamarckii ? | Chrysaora hysoscella |
| P | 2004-07-02 | Maenmelt Maen mellt, |
Rock face/ boulders at 17-22 m Hundreds, numerous groupings | Parazoanthus anguicomus |
| P | 2004-10-10 | Penllech Beach North end Penllech Beach |
1000's seen on strandline (S.W. facing) | Velella velella |