Species: Remskivesnegl (Bathyomphalus contortus)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Bogstadvannet | Oslo, Norway | 1 | 1 | 0 | 1995-06-09 | |
| Dælivannet | Akershus, Norway | 2 | 1 | 0 | 1992-09-10 | |
| Frøylandsvatnet | Rogaland, Norway | 3 | 1 | 0 | 1993-09-29 | |
| Gjølsjøen | Østfold, Norway | 1 | 1 | 0 | 1996-06-11 | |
| Granavatnet | Trøndelag, Norway | 1 | 1 | 0 | 1993-08-31 | |
| Gullerudtjern | Buskerud, Norway | 1 | 1 | 0 | 1990-09-26 | |
| Hammervatnet | Trøndelag, Norway | 9 | 1 | 0 | 1996-10-17 | |
| Jarenvannet | Innlandet, Norway | 1 | 1 | 0 | 1990-08-28 | |
| Kristianborgvannet | Vestland, Norway | 1 | 1 | 0 | 2006-05-11 | |
| Kvitblikkvannet | Nordland, Norway | 2 | 1 | 0 | 1990-09-04 | |
| Langvannet | Akershus, Norway | 1 | 1 | 0 | 2002-05-23 | |
| Laupen | Innlandet, Norway | 1 | 1 | 0 | 1990-09-17 | |
| Lianvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1995-09-12 | |
| Litlvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1993-09-15 | |
| Midsjøvannet | Akershus, Norway | 1 | 1 | 0 | 1993-09-19 | |
| Rullestadtjern | Akershus, Norway | 1 | 1 | 0 | 1991-09-19 | |
| Semsvannet | Akershus, Norway | 1 | 1 | 0 | 1989-09-21 | |
| Stavsjø | Innlandet, Norway | 1 | 1 | 0 | 1990-06-02 | |
| Tveitevannet | Vestland, Norway | 3 | 1 | 0 | 1992-09-10 | |
| Øksnevadtjørna | Rogaland, Norway | 1 | 1 | 0 | 1991-09-15 | |
| Årungen | Akershus, Norway | 4 | 1 | 0 | 1993-09-22 | |