Sargassum muticum
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Samfundets skole Egersund | Rogaland, Norway | 138 | 1 | 0 | 2022-09-20 |
| Jordet skole | Vestfold, Norway | 65 | 1 | 0 | 2006-09-07 |
| Varden ungdomsskole | Vestfold, Norway | 51 | 1 | 0 | 2000-05-30 |
| Tingsaker skole | Agder, Norway | 51 | 1 | 0 | 2001-10-08 |
| Store Bergan skole | Vestfold, Norway | 50 | 1 | 0 | 2004-09-17 |
| Ranvik ungdomsskole | Vestfold, Norway | 45 | 1 | 0 | 1997-10-09 |
| Færder videregående skole | Vestfold, Norway | 35 | 1 | 0 | 1997-10-10 |
| Vesterøy skole | Vestfold, Norway | 35 | 1 | 0 | 1995-09-22 |
| Brentemoen skole | Agder, Norway | 30 | 1 | 0 | 1996-09-19 |
| Hauge skole | Rogaland, Norway | 29 | 1 | 0 | 1997-10-16 |
| Sandnes skole | Agder, Norway | 27 | 1 | 1 | 2016-05-25 |
| Brunla ungdomsskole | Vestfold, Norway | 24 | 1 | 0 | 1999-09-29 |
| Blomdalen ungdomsskole | Agder, Norway | 23 | 1 | 0 | 1995-09-21 |
| Helgerød skole | Vestfold, Norway | 20 | 1 | 0 | 1998-09-17 |
| Nesheim skole | Agder, Norway | 19 | 1 | 0 | 1998-09-22 |
| Mesterfjellet ungdomsskole | Vestfold, Norway | 17 | 1 | 0 | 1998-09-24 |
| Høgskolen i Agder | Agder, Norway | 17 | 1 | 0 | 1994-12-09 |
| Levangsheia skole | Telemark, Norway | 16 | 1 | 0 | 1995-10-06 |
| Grødem skole | Rogaland, Norway | 16 | 1 | 0 | 1997-10-14 |
| Kruge leirskole | Vestfold, Norway | 15 | 1 | 0 | 1996-10-10 |
| Berg skole | Vestfold, Norway | 14 | 1 | 0 | 1997-09-24 |
| Gjeving skole | Agder, Norway | 14 | 1 | 0 | 1997-10-01 |
| Fjære barneskole | Agder, Norway | 14 | 1 | 0 | 1998-09-07 |
| Nærbø ungdomsskule | Rogaland, Norway | 12 | 1 | 0 | 1998-10-02 |
| Hundvåg skole | Rogaland, Norway | 12 | 1 | 0 | 2000-12-07 |
| Hafrsfjord skole | Rogaland, Norway | 12 | 1 | 0 | 1997-09-23 |
| Stinta skole barne- og Ungdomstrinnet | Agder, Norway | 11 | 1 | 0 | 1997-10-03 |
| Holvika ungdomsskole | Agder, Norway | 10 | 1 | 0 | 1994-11-04 |
| Tromøy ungdomsskole | Agder, Norway | 10 | 1 | 0 | 2005-09-22 |
| Framnes skole | Vestfold, Norway | 10 | 1 | 0 | 1996-09-25 |
| Mathopen skole | Vestland, Norway | 10 | 1 | 8 | 2017-09-14 |
| Lillesand ungdomsskole | Agder, Norway | 9 | 1 | 0 | 1994-10-17 |
| Samfundets skole Sentrum | Agder, Norway | 8 | 1 | 0 | 2011-09-08 |
| Lindhøy skole | Vestfold, Norway | 8 | 1 | 0 | 1994-11-30 |
| Sandgotna skole | Vestland, Norway | 7 | 1 | 3 | 2023-06-15 |
| Krokemoa skole | Vestfold, Norway | 7 | 1 | 0 | 1993-10-21 |
| Lyngmyr skole | Agder, Norway | 7 | 1 | 0 | 1993-09-10 |
| Moltemyr skole | Agder, Norway | 6 | 1 | 0 | 1995-09-28 |
| Torød skole | Vestfold, Norway | 6 | 1 | 0 | 1998-09-18 |
| Nedenes skole/Ungdomstrinnet | Agder, Norway | 6 | 1 | 0 | 1994-10-26 |
| Stavern skole | Vestfold, Norway | 5 | 1 | 0 | 1998-09-23 |
| Bokn skule | Rogaland, Norway | 5 | 1 | 0 | 1998-10-05 |
| Melsom videregående skole | Vestfold, Norway | 5 | 1 | 0 | 1998-09-22 |
| Gosen skole | Rogaland, Norway | 4 | 1 | 0 | 1996-10-08 |
| Goa skole | Rogaland, Norway | 4 | 1 | 0 | 1996-10-02 |
| Hisøy ungdomsskole | Agder, Norway | 4 | 1 | 0 | 1996-09-27 |
| Tvedestrand skole | Agder, Norway | 4 | 1 | 0 | 1994-12-05 |
| Borkedalen skole | Agder, Norway | 4 | 1 | 0 | 1995-09-08 |
| Ormestad skole | Vestfold, Norway | 4 | 1 | 0 | 1993-09-27 |
| Husvik skole | Vestfold, Norway | 4 | 1 | 0 | 2000-11-07 |