Sargassum muticum
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Skottevig | Agder, Norway | 3 | 1 | 0 | 1995-10-09 | |
| Skåraneset | Rogaland, Norway | 1 | 1 | 0 | 1995-10-02 | |
| Slagen | Vestfold, Norway | 3 | 1 | 0 | 1997-09-25 | |
| Spervik | Vestfold, Norway | 18 | 1 | 0 | 1997-10-09 | |
| Stangodden | Agder, Norway | 2 | 1 | 0 | 1993-10-17 | |
| Stathelle | Telemark, Norway | 1 | 1 | 0 | 1996-09-25 | |
| Stavern | Vestfold, Norway | 5 | 1 | 0 | 1998-09-23 | |
| Stavern | Vestfold, Norway | 2 | 1 | 0 | 1999-09-29 | |
| Steika | Vestfold, Norway | 3 | 1 | 0 | 1997-09-16 | |
| Strand | Vestfold, Norway | 7 | 1 | 0 | 1993-10-21 | |
| Støre/Eigerøy | Rogaland, Norway | 134 | 1 | 0 | 2022-09-20 | |
| Syvdefjorden | Møre og Romsdal, Norway | 3 | 1 | 0 | 1997-10-09 | |
| Sømskilen | Agder, Norway | 10 | 1 | 0 | 1997-10-03 | |
| Tangen | Vestfold, Norway | 35 | 1 | 0 | 1995-09-22 | |
| Tenvik | Vestfold, Norway | 1 | 1 | 0 | 1998-09-21 | |
| Torvastad | Rogaland, Norway | 1 | 1 | 0 | 1994-11-25 | |
| Torvastad (Blokknr 39) | Rogaland, Norway | 24 | 1 | 0 | 1997-10-16 | |
| Torød | Vestfold, Norway | 3 | 1 | 0 | 1996-09-24 | |
| Torød | Vestfold, Norway | 3 | 1 | 0 | 1998-09-18 | |
| Treidene | Vestfold, Norway | 3 | 1 | 0 | 1997-10-10 | |
| Tromøy | Agder, Norway | 6 | 1 | 0 | 1995-09-28 | |
| Tungeneset | Rogaland, Norway | 13 | 1 | 0 | 1997-10-14 | |
| Uten navn | Vestfold, Norway | 21 | 1 | 0 | 1997-05-15 | |
| Valderøy | Møre og Romsdal, Norway | 2 | 1 | 0 | 1994-11-04 | |
| Vallø,Husvik | Vestfold, Norway | 4 | 1 | 0 | 2000-11-07 | |
| Vannøya | Vestfold, Norway | 50 | 1 | 0 | 2004-09-17 | |
| Vassøy | Rogaland, Norway | 1 | 1 | 0 | 1995-10-04 | |
| Veierland | Vestfold, Norway | 2 | 1 | 0 | 1995-09-27 | |
| Verdens ende | Vestfold, Norway | 20 | 1 | 0 | 1996-09-17 | |
| Vesterhavna | Agder, Norway | 6 | 1 | 0 | 2009-09-02 | |
| Vesterøy | Vestfold, Norway | 9 | 1 | 0 | 1994-11-11 | |
| Vesterøya | Vestfold, Norway | 21 | 1 | 0 | 2000-05-30 | |
| Vesterøya | Vestfold, Norway | 4 | 1 | 0 | 1993-09-27 | |
| Vigra | Møre og Romsdal, Norway | 1 | 1 | 0 | 1993-10-22 | |
| Viste | Rogaland, Norway | 4 | 1 | 0 | 1996-10-02 | |
| York | Vestfold, Norway | 1 | 1 | 0 | 1993-10-26 | |
| Ytre Flosterøy | Agder, Norway | 19 | 1 | 0 | 1998-09-22 | |
| Ytre Ulvøya | Agder, Norway | 16 | 1 | 0 | 1994-12-09 | |
| Ølbergholmen | Vestfold, Norway | 8 | 1 | 0 | 1998-09-24 | |
| Ørskogvika | Møre og Romsdal, Norway | 1 | 1 | 0 | 1993-09-24 | |
| Østerhavna | Agder, Norway | 1 | 1 | 0 | 2011-09-08 | |
| Østre Kvaknes-Staubø | Agder, Norway | 4 | 1 | 0 | 1994-11-04 | |
| Øyane-Skeie | Rogaland, Norway | 2 | 1 | 0 | 1998-06-09 | |
| Åkrehamn | Rogaland, Norway | 3 | 1 | 0 | 1994-11-25 | |
| Åsgårdstrand | Vestfold, Norway | 1 | 1 | 0 | 1993-10-12 |