Genus: Balanus
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Øyane-Skeie | Rogaland, Norway | 3 | 1 | 0 | 1998-06-09 | |
| Åfarnes | Møre og Romsdal, Norway | 10 | 1 | 0 | 1995-09-27 | |
| Åfjord | Trøndelag, Norway | 6 | 1 | 0 | 1995-09-14 | |
| Åheim | Møre og Romsdal, Norway | 32 | 1 | 0 | 1997-10-08 | |
| Åros | Akershus, Norway | 2 | 1 | 0 | 1996-10-23 | |
| Årøykilen til Askelundkilen | Vestfold, Norway | 4 | 1 | 0 | 1995-09-28 | |
| Åsgårdstrand | Vestfold, Norway | 3 | 1 | 0 | 1996-10-11 | |
| Åstveit | Vestland, Norway | 6 | 1 | 0 | 1995-09-20 |
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