Genus: Nettsnegler (Nassarius)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Arendal | Agder, Norway | 2 | 1 | 2 | 2014-05-07 | |
| Drøbak | Akershus, Norway | 1 | 1 | 1 | 2004-05-04 | |
| Dybdalstrand | Agder, Norway | 1 | 1 | 1 | 2017-09-20 | |
| Elingaardskilen | Østfold, Norway | 1 | 1 | 0 | 1994-09-29 | |
| Håkonshella | Vestland, Norway | 1 | 1 | 1 | 2017-09-21 | |
| Jomfruland | Telemark, Norway | 2 | 1 | 3 | 2013-05-13 | |
| Lund-Klungset | Nordland, Norway | 1 | 1 | 1 | 2014-05-29 |