Archeogastropoda
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Monstad | Trøndelag, Norway | 6 | 2 | 0 | 1994-12-05 | |
| Moutmarka | Vestfold, Norway | 3 | 2 | 0 | 1994-11-09 | |
| Munkerekka | Vestfold, Norway | 22 | 4 | 0 | 2001-05-21 | |
| Myklebost | Møre og Romsdal, Norway | 14 | 1 | 0 | 1993-09-24 | |
| Mærdø | Agder, Norway | 9 | 2 | 0 | 1994-10-26 | |
| Møllebukta, Hafrsfjord | Rogaland, Norway | 52 | 4 | 0 | 1996-10-08 | |
| Mørkvedbukta, Fjæra | Nordland, Norway | 11 | 2 | 2 | 2014-10-09 | |
| Måndalen | Møre og Romsdal, Norway | 6 | 2 | 0 | 1996-10-23 | |
| Narvik | Nordland, Norway | 193 | 4 | 0 | 1998-11-24 | |
| Nattholmen | Vestfold, Norway | 16 | 4 | 0 | 1998-09-17 | |
| Naustrekka | Vestland, Norway | 1 | 1 | 1 | 2021-06-15 | |
| Naverfjorden | Vestfold, Norway | 17 | 2 | 0 | 2000-09-26 | |
| Nesna | Nordland, Norway | 4 | 1 | 0 | 1997-10-07 | |
| Nordbø | Rogaland, Norway | 38 | 4 | 0 | 1999-09-29 | |
| Nordnesøy | Nordland, Norway | 40 | 4 | 0 | 1998-09-15 | |
| Nordre Eigerøy | Rogaland, Norway | 13 | 3 | 0 | 1999-05-31 | |
| Nær Vartdal skule | Møre og Romsdal, Norway | 7 | 1 | 0 | 1994-10-03 | |
| Nærbø | Rogaland, Norway | 77 | 4 | 0 | 1998-10-02 | |
| Oddane sand/Smørbukta | Vestfold, Norway | 34 | 4 | 0 | 1997-09-24 | |
| Oksvoll | Trøndelag, Norway | 37 | 4 | 0 | 2001-10-19 | |
| Orerønningen | Vestfold, Norway | 1 | 1 | 0 | 1993-11-29 | |
| Ormelet | Vestfold, Norway | 7 | 2 | 0 | 1994-11-09 | |
| Orvika | Møre og Romsdal, Norway | 71 | 4 | 0 | 2002-05-31 | |
| Osen | Nordland, Norway | 1 | 1 | 0 | 2010-05-19 | |
| Ottersøy | Trøndelag, Norway | 15 | 4 | 0 | 1995-10-26 | |
| paradisbukta | Agder, Norway | 1 | 1 | 0 | 2021-08-31 | |
| pollen | Vestland, Norway | 8 | 1 | 1 | 2019-06-13 | |
| Pusnes/Tybakken | Agder, Norway | 18 | 4 | 0 | 2005-09-22 | |
| Randesund | Agder, Norway | 3 | 1 | 0 | 1994-12-01 | |
| Ranvik | Vestfold, Norway | 10 | 4 | 0 | 1996-09-24 | |
| Ranvik | Agder, Norway | 3 | 2 | 0 | 1993-09-01 | |
| Ravnøy | Vestfold, Norway | 16 | 4 | 0 | 1995-09-21 | |
| Ringshaug | Vestfold, Norway | 9 | 4 | 0 | 1997-09-26 | |
| Risør til Hisøya | Agder, Norway | 1 | 1 | 1 | 2013-03-20 | |
| Rolfsbukta, Fornebu | Akershus, Norway | 1 | 1 | 0 | 2010-08-25 | |
| Rosfjorden | Agder, Norway | 22 | 4 | 0 | 1995-11-01 | |
| Rotvoll/Leangen fjæra | Trøndelag, Norway | 8 | 1 | 4 | 2019-08-23 | |
| Rotvollfjæra | Trøndelag, Norway | 13 | 1 | 0 | 2017-09-05 | |
| Runde | Møre og Romsdal, Norway | 2 | 1 | 0 | 2013-05-23 | |
| Rypefjord | Finnmark, Norway | 5 | 2 | 0 | 1993-11-12 | |
| Ryum | Trøndelag, Norway | 1 | 1 | 0 | 2020-10-22 | |
| Rækvika | Nordland, Norway | 1 | 1 | 0 | 1994-11-29 | |
| Rødskjær | Vestfold, Norway | 38 | 4 | 0 | 2008-09-11 | |
| Rømmen/Lysøysundet | Trøndelag, Norway | 6 | 1 | 0 | 1993-11-19 | |
| Røvika | Vestfold, Norway | 46 | 4 | 0 | 2008-09-11 | |
| Røyset | Vestland, Norway | 6 | 2 | 0 | 1994-11-30 | |
| Sageneset | Vestland, Norway | 9 | 3 | 2 | 2003-09-15 | |
| Sagesund-Falkøya | Agder, Norway | 2 | 2 | 0 | 1993-10-29 | |
| Salhusstrømmen(Fastlandssiden) | Rogaland, Norway | 32 | 4 | 0 | 1995-10-04 | |
| Saltstein | Telemark, Norway | 1 | 1 | 0 | 1995-01-02 |