Carcinus maenas
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Grov skole | Troms, Norway | 1 | 1 | 1 | 2019-10-31 |
| Skarveland skule | Vestland, Norway | 1 | 1 | 0 | 2019-05-23 |
| Eidsvåg skole | Vestland, Norway | 1 | 1 | 1 | 2015-05-05 |
| Myre skole | Nordland, Norway | 1 | 1 | 0 | 2021-08-27 |
| Skranevatnet skole | Vestland, Norway | 1 | 1 | 0 | 2016-10-03 |
| Grindhaug skole | Rogaland, Norway | 1 | 1 | 0 | 2018-06-05 |
| Halsnøy skule | Vestland, Norway | 1 | 1 | 0 | 2019-05-23 |
| Ortun skole | Vestland, Norway | 1 | 1 | 0 | 2010-09-22 |
| Ramsund Skole/tjeldsund ungdomsskole | Troms, Norway | 1 | 1 | 0 | 2020-08-31 |
| Rød skole Onsøy | Østfold, Norway | 1 | 1 | 0 | 2022-09-12 |
| Vang skole og ressurssenter | Østfold, Norway | 1 | 1 | 0 | 2016-09-08 |
| Elihu Kristne grunnskole | Vestfold, Norway | 1 | 1 | 0 | 2008-04-22 |
| Utheim skole | Møre og Romsdal, Norway | 1 | 1 | 0 | 2019-06-11 |
| Foldnes skule | Vestland, Norway | 1 | 1 | 0 | 2006-04-21 |
| M/s Skagholm/Frøya videregående skole | Trøndelag, Norway | 1 | 1 | 0 | 1994-06-02 |
| Sund ungdomsskule | Vestland, Norway | 1 | 1 | 1 | 2007-06-07 |