Potamopyrgus
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Vardafjell videregående skole | Rogaland, Norway | 5 | 1 | 0 | 1993-09-14 |
| Bryne vidaregåande skule | Rogaland, Norway | 3 | 1 | 0 | 1993-06-01 |
| Jæren folkehøgskule | Rogaland, Norway | 2 | 1 | 0 | 1993-09-29 |
| Flekkefjord vgs | Agder, Norway | 1 | 1 | 0 | 1993-09-28 |
| Ledaal videregående skole | Rogaland, Norway | 1 | 1 | 0 | 1989-09-06 |