Phylum: Red algae (Rhodophyta)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| "Høyskolen" ved Årstadtjørn | Rogaland, Norway | 2 | 1 | 0 | 2015-09-21 | |
| Akvastasjonen | Vestland, Norway | 5 | 1 | 0 | 2001-02-16 | |
| Alteren | Nordland, Norway | 8 | 1 | 0 | 2000-10-03 | |
| Alvestad-Grøtavær | Troms, Norway | 4 | 1 | 0 | 1993-11-16 | |
| Alvøy (Dåvøy-Nyneset) | Vestland, Norway | 21 | 1 | 0 | 1996-09-18 | |
| Amdam | Møre og Romsdal, Norway | 6 | 2 | 0 | 2000-09-22 | |
| Arendal | Agder, Norway | 1 | 1 | 0 | 2013-03-20 | |
| Arendal | Agder, Norway | 3 | 3 | 0 | 2013-03-20 | |
| Arendal | Agder, Norway | 8 | 3 | 8 | 2017-10-27 | |
| Arendal | Agder, Norway | 1 | 1 | 0 | 2013-03-20 | |
| Arendal havneområde | Agder, Norway | 5 | 1 | 0 | 1998-09-26 | |
| Askrova | Vestland, Norway | 3 | 1 | 0 | 1994-01-13 | |
| Asmalø | Østfold, Norway | 4 | 1 | 0 | 1993-11-23 | |
| Asmaløy | Østfold, Norway | 36 | 1 | 0 | 1996-09-25 | |
| Avaldsnes | Rogaland, Norway | 14 | 1 | 0 | 1995-10-20 | |
| Balderheim | Vestland, Norway | 2 | 1 | 0 | 1993-11-08 | |
| Barneskjær | Vestfold, Norway | 6 | 1 | 0 | 1996-09-26 | |
| Bastøy | Vestfold, Norway | 15 | 1 | 0 | 1994-11-11 | |
| Batnfjordsøra | Møre og Romsdal, Norway | 14 | 1 | 0 | 1996-10-14 | |
| Bergerbukta | Buskerud, Norway | 1 | 1 | 0 | 1994-12-09 | |
| bertesbukta | Agder, Norway | 1 | 1 | 1 | 2013-06-03 | |
| Bjellandstrand | Agder, Norway | 3 | 2 | 3 | 2017-10-18 | |
| bjellandstrand | Agder, Norway | 2 | 2 | 2 | 2017-09-20 | |
| bjellandstrand | Agder, Norway | 3 | 3 | 3 | 2014-05-14 | |
| Bjellandstrand | Agder, Norway | 46 | 9 | 43 | 2016-06-08 | |
| Bjellandstrand | Agder, Norway | 7 | 6 | 7 | 2017-10-20 | |
| Bjellanstrand | Agder, Norway | 4 | 3 | 4 | 2017-11-01 | |
| Bjerkvik | Nordland, Norway | 6 | 1 | 0 | 1998-09-29 | |
| Bjoa | Rogaland, Norway | 26 | 1 | 0 | 1994-12-01 | |
| Bjorvika-Melkevika | Vestland, Norway | 7 | 1 | 0 | 1996-09-27 | |
| Bjørkøya | Telemark, Norway | 1 | 1 | 0 | 1993-10-14 | |
| Bjørnsandfjæra | Nordland, Norway | 3 | 1 | 0 | 1996-09-17 | |
| Blakstadbukta-Vollen | Akershus, Norway | 4 | 1 | 0 | 1994-01-13 | |
| Bleikstranda | Nordland, Norway | 11 | 1 | 0 | 1997-10-22 | |
| Blokknr 1 | Trøndelag, Norway | 1 | 1 | 0 | 1996-10-23 | |
| Blokknr 1 | Møre og Romsdal, Norway | 2 | 1 | 0 | 1996-09-19 | |
| Blokknr 104 | Vestfold, Norway | 4 | 1 | 0 | 1997-09-18 | |
| Blokknr 118 | Møre og Romsdal, Norway | 12 | 1 | 0 | 1996-09-20 | |
| Blokknr 118 | Møre og Romsdal, Norway | 3 | 1 | 0 | 1996-09-20 | |
| Blokknr 131 | Møre og Romsdal, Norway | 2 | 1 | 0 | 1996-09-20 | |
| Blokknr 132 | Møre og Romsdal, Norway | 4 | 1 | 0 | 1996-10-18 | |
| Blokknr 2 | Vestfold, Norway | 7 | 1 | 0 | 1996-09-19 | |
| Blokknr 25 | Telemark, Norway | 1 | 1 | 0 | 1995-09-20 | |
| Blokknr 34 | Vestland, Norway | 1 | 1 | 0 | 1996-09-24 | |
| Blokknr 34 | Agder, Norway | 2 | 1 | 0 | 1996-11-10 | |
| Blokknr 35 | Agder, Norway | 1 | 1 | 0 | 1996-10-09 | |
| Blokknr 40 | Rogaland, Norway | 7 | 1 | 0 | 1996-10-03 | |
| Blokknr 40 | Troms, Norway | 16 | 1 | 0 | 1997-10-09 | |
| Blokknr 54 | Møre og Romsdal, Norway | 1 | 1 | 0 | 1997-10-01 | |
| Blokknr 71 | Nordland, Norway | 1 | 1 | 0 | 1995-10-19 |