Species: Vanlig sandskjell (Mya arenaria)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Bragdøya | Agder, Norway | 2 | 1 | 0 | 1994-06-09 | |
| Drøbak | Akershus, Norway | 1 | 1 | 0 | 2004-05-04 | |
| Englan | Nordland, Norway | 1 | 1 | 0 | 1996-04-16 | |
| Espegrend | Vestland, Norway | 1 | 1 | 0 | 2001-01-31 | |
| Grefstadvika | Agder, Norway | 1 | 1 | 1 | 2014-09-04 | |
| Hansbakkfjæra | Trøndelag, Norway | 1 | 1 | 0 | 2018-05-24 | |
| Hauknesfjæra | Nordland, Norway | 1 | 1 | 0 | 2014-08-02 | |
| Helgeroafjorden | Vestfold, Norway | 2 | 1 | 0 | 1993-12-08 | |
| Herdla | Vestland, Norway | 1 | 1 | 0 | 2007-05-18 | |
| Håkonshella | Vestland, Norway | 3 | 1 | 3 | 2018-05-24 | |
| Jomfruland | Telemark, Norway | 2 | 1 | 2 | 2013-05-13 | |
| Klippfiskberget | Troms, Norway | 1 | 1 | 0 | 2013-05-23 | |
| Kårtveitpollen | Vestland, Norway | 1 | 1 | 1 | 2014-09-24 | |
| Lund-Klungset | Nordland, Norway | 1 | 1 | 1 | 2014-05-29 | |
| Mesxy | Finnmark, Norway | 1 | 1 | 0 | 1994-04-08 | |
| Ormefjorden | Telemark, Norway | 1 | 1 | 0 | 1994-05-04 | |
| Osen | Nordland, Norway | 1 | 1 | 0 | 2010-05-19 | |
| pollen | Vestland, Norway | 1 | 1 | 0 | 2019-06-12 | |
| Refsnesstranda | Østfold, Norway | 2 | 1 | 0 | 2014-08-27 | |
| V. Måsane | Akershus, Norway | 3 | 1 | 0 | 1996-05-21 | |