Family: Rissoidae
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Fjæra på Skjelnan | Troms, Norway | 1 | 1 | 0 | 2004-06-02 | |
| Kolvereid | Trøndelag, Norway | 1 | 1 | 0 | 2016-09-09 | |
| Ørskogvika | Møre og Romsdal, Norway | 5 | 1 | 0 | 1997-09-24 |
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