Location: Vestre Sandøya, Klåholmen
| Year | Arter/grupper | Participants | Observations |
|---|---|---|---|
| 2013 | 22 | 1 | 27 |
| 2023 | 22 | 1 | 32 |
| 2018 | 15 | 1 | 21 |
| 2014 | 14 | 1 | 17 |
| 2022 | 18 | 1 | 33 |
| 2011 | 16 | 1 | 29 |
| 2017 | 27 | 1 | 35 |
| 2020 | 22 | 1 | 45 |
| 2010 | 1 | 1 | 1 |
| 2012 | 18 | 1 | 22 |
| 2016 | 22 | 1 | 37 |
| 2019 | 1 | 1 | 1 |
| 2015 | 18 | 1 | 28 |
| Totalt alle år | 56 | 1 | 328 |