Ascophyllum nodosum
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Samfundets skole Egersund | Rogaland, Norway | 164 | 1 | 0 | 2023-09-26 |
| Myklebust skule | Møre og Romsdal, Norway | 152 | 1 | 0 | 1997-10-09 |
| Tromøy ungdomsskole | Agder, Norway | 147 | 1 | 0 | 2005-09-22 |
| Jordet skole | Vestfold, Norway | 139 | 1 | 0 | 2008-09-11 |
| Liland skole | Nordland, Norway | 132 | 1 | 0 | 2004-10-05 |
| Frydenlund skole | Nordland, Norway | 119 | 1 | 0 | 1998-11-24 |
| Tingsaker skole | Agder, Norway | 111 | 1 | 0 | 2001-10-08 |
| Erdal ungdomsskole | Vestland, Norway | 109 | 1 | 0 | 1995-10-13 |
| Grødem skole | Rogaland, Norway | 108 | 1 | 0 | 1997-10-14 |
| Sandgotna skole | Vestland, Norway | 86 | 1 | 20 | 2020-06-12 |
| Færder videregående skole | Vestfold, Norway | 85 | 1 | 0 | 1999-10-22 |
| Sjøholt skule | Møre og Romsdal, Norway | 79 | 1 | 0 | 2001-09-24 |
| Ytterøy skole | Trøndelag, Norway | 78 | 1 | 0 | 1997-09-23 |
| Husvik skole | Vestfold, Norway | 78 | 1 | 0 | 2000-11-07 |
| Varden ungdomsskole | Vestfold, Norway | 75 | 1 | 0 | 2000-05-30 |
| Bjerkvik barne- og ungdomsskole | Nordland, Norway | 71 | 1 | 0 | 1998-09-29 |
| Alteren skole | Nordland, Norway | 71 | 1 | 0 | 2002-09-27 |
| Hauge skole | Rogaland, Norway | 71 | 1 | 0 | 1997-10-16 |
| Innvik skule | Vestland, Norway | 68 | 1 | 0 | 1996-10-03 |
| Mesterfjellet ungdomsskole | Vestfold, Norway | 67 | 1 | 0 | 1998-09-24 |
| Harøy skule | Møre og Romsdal, Norway | 67 | 1 | 0 | 1998-10-30 |
| Torød skole | Vestfold, Norway | 66 | 1 | 0 | 1999-09-29 |
| Strand skole | Nordland, Norway | 63 | 1 | 0 | 1996-09-16 |
| Hafrsfjord skole | Rogaland, Norway | 59 | 1 | 0 | 1998-09-28 |
| Hårkollen skole | Vestfold, Norway | 59 | 1 | 0 | 1998-09-24 |
| Blomdalen ungdomsskole | Agder, Norway | 57 | 1 | 0 | 1995-09-21 |
| Brunla ungdomsskole | Vestfold, Norway | 56 | 1 | 0 | 1998-09-18 |
| Berg skole | Vestfold, Norway | 56 | 1 | 0 | 1997-09-24 |
| Nærbø ungdomsskule | Rogaland, Norway | 55 | 1 | 0 | 1998-10-02 |
| Tvedestrand skole | Agder, Norway | 55 | 1 | 0 | 1998-09-24 |
| Innsmøla barneskole | Møre og Romsdal, Norway | 55 | 1 | 0 | 1996-09-19 |
| Mathopen skole | Vestland, Norway | 53 | 1 | 30 | 2020-10-13 |
| Statland skole | Trøndelag, Norway | 53 | 1 | 0 | 1996-06-19 |
| Bakkamyra barneskole | Møre og Romsdal, Norway | 52 | 1 | 0 | 1996-09-20 |
| Borgheim ungdomsskole | Vestfold, Norway | 52 | 1 | 0 | 1998-09-21 |
| Sandnes skole | Agder, Norway | 52 | 1 | 15 | 2017-09-20 |
| Samfundets skole Sentrum | Agder, Norway | 52 | 1 | 0 | 2014-08-27 |
| Stinta skole barne- og Ungdomstrinnet | Agder, Norway | 52 | 1 | 1 | 2013-09-02 |
| Åheim skule | Møre og Romsdal, Norway | 52 | 1 | 0 | 1997-10-08 |
| Goa skole | Rogaland, Norway | 51 | 1 | 0 | 1996-10-02 |
| Batnfjord skule | Møre og Romsdal, Norway | 50 | 1 | 0 | 1996-10-14 |
| Vatne barneskule | Møre og Romsdal, Norway | 50 | 1 | 0 | 2002-05-31 |
| Gjelsvik skule | Vestland, Norway | 49 | 1 | 0 | 1996-09-19 |
| Helgerød skole | Vestfold, Norway | 48 | 1 | 0 | 1998-09-17 |
| Fjære barneskole | Agder, Norway | 48 | 1 | 0 | 1998-09-07 |
| Kruge leirskole | Vestfold, Norway | 47 | 1 | 0 | 1996-10-10 |
| Hundvåg skole | Rogaland, Norway | 46 | 1 | 0 | 2000-12-07 |
| Ranvik ungdomsskole | Vestfold, Norway | 45 | 1 | 0 | 1997-10-09 |
| Alvheim skule | Vestland, Norway | 45 | 1 | 0 | 1997-10-06 |
| Brentemoen skole | Agder, Norway | 44 | 1 | 0 | 1997-10-02 |