Species: Sea Thong (Himanthalia elongata)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Amdam | Møre og Romsdal, Norway | 1 | 1 | 0 | 1997-10-07 | |
| Bjellandstrand | Agder, Norway | 5 | 1 | 5 | 2015-06-04 | |
| Bjellandstrand | Agder, Norway | 1 | 1 | 1 | 2017-10-20 | |
| Bjellanstrand | Agder, Norway | 1 | 1 | 1 | 2017-11-01 | |
| Eide | Møre og Romsdal, Norway | 1 | 1 | 0 | 1997-09-30 | |
| Fjæra på Skjelnan | Troms, Norway | 2 | 1 | 0 | 2008-06-13 | |
| Kårtveitpollen | Vestland, Norway | 1 | 1 | 1 | 2014-09-24 | |
| Støre/Eigerøy | Rogaland, Norway | 3 | 1 | 0 | 2001-09-04 |