Phylum: Molluscs (Mollusca)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Bekk ved Gulskogen | Buskerud, Norway | 8 | 4 | 0 | 1994-06-01 | |
| Bekkenstenveien | Akershus, Norway | 1 | 1 | 1 | 2007-05-13 | |
| Bekkevika | Vestfold, Norway | 51 | 15 | 0 | 2014-09-24 | |
| Berg i Valle | Agder, Norway | 2 | 1 | 0 | 2005-08-25 | |
| Berg, Valle | Agder, Norway | 1 | 1 | 0 | 2005-08-25 | |
| Bergemsvatnet | Møre og Romsdal, Norway | 2 | 2 | 0 | 1990-10-04 | |
| Bergerbukta | Buskerud, Norway | 9 | 5 | 0 | 1995-09-07 | |
| Berglund | Trøndelag, Norway | 8 | 6 | 14 | 2012-06-12 | |
| Bergsfjord | Finnmark, Norway | 6 | 6 | 6 | 2021-09-08 | |
| Bergsfjord | Finnmark, Norway | 1 | 1 | 2 | 2018-09-28 | |
| Bergsto | Telemark, Norway | 2 | 2 | 9 | 2012-06-09 | |
| Bergsvatnet | Vestland, Norway | 2 | 2 | 0 | 1995-09-22 | |
| Bergvikvatnet | Nordland, Norway | 9 | 2 | 0 | 1993-09-13 | |
| Bergåsen | Møre og Romsdal, Norway | 7 | 7 | 0 | 2012-08-15 | |
| bertesbukta | Agder, Norway | 6 | 4 | 5 | 2013-06-04 | |
| Bikkjedammen | Akershus, Norway | 1 | 1 | 0 | 2013-09-18 | |
| Billaelva | Innlandet, Norway | 1 | 1 | 1 | 2007-10-29 | |
| Bjellandstrand | Agder, Norway | 44 | 9 | 46 | 2016-06-08 | |
| Bjellandstrand | Agder, Norway | 3 | 2 | 2 | 2017-10-20 | |
| Bjellandstrand | Agder, Norway | 3 | 2 | 3 | 2017-10-18 | |
| bjellandstrand | Agder, Norway | 2 | 2 | 2 | 2017-09-20 | |
| Bjellanstrand | Agder, Norway | 4 | 3 | 4 | 2017-11-01 | |
| Bjerkvik | Nordland, Norway | 402 | 14 | 0 | 1998-09-29 | |
| Bjoa | Rogaland, Norway | 113 | 12 | 0 | 1996-09-05 | |
| Bjorvika-Melkevika | Vestland, Norway | 34 | 10 | 0 | 1996-09-27 | |
| Bjønnliveien 4 | Troms, Norway | 1 | 1 | 3 | 2018-08-04 | |
| Bjørkelangen | Akershus, Norway | 11 | 2 | 0 | 2024-04-13 | |
| Bjørkøya | Telemark, Norway | 7 | 4 | 0 | 1993-10-14 | |
| Bjørnedammen | Akershus, Norway | 2 | 2 | 0 | 2013-09-19 | |
| Bjørnsandfjæra | Nordland, Norway | 24 | 12 | 0 | 1996-09-17 | |
| Bjørnstad-dammen | Innlandet, Norway | 3 | 3 | 0 | 2013-09-06 | |
| Blakset | Vestland, Norway | 12 | 5 | 0 | 1994-11-04 | |
| Blakstadbukta-Vollen | Akershus, Norway | 35 | 8 | 0 | 1994-01-13 | |
| Bleikstranda | Nordland, Norway | 147 | 12 | 0 | 1997-10-22 | |
| Blindern | Oslo, Norway | 1 | 1 | 0 | 2016-06-15 | |
| Blindern stasjon | Oslo, Norway | 1 | 1 | 0 | 2015-06-03 | |
| Blindern videregående skole | Oslo, Norway | 1 | 1 | 0 | 2020-05-27 | |
| Blokknr 1 | Trøndelag, Norway | 64 | 8 | 0 | 1996-10-23 | |
| Blokknr 1 | Møre og Romsdal, Norway | 41 | 9 | 0 | 1996-09-19 | |
| Blokknr 104 | Vestfold, Norway | 54 | 12 | 0 | 1997-09-18 | |
| Blokknr 118 | Møre og Romsdal, Norway | 24 | 5 | 0 | 1996-09-20 | |
| Blokknr 118 | Møre og Romsdal, Norway | 122 | 15 | 0 | 1996-09-20 | |
| Blokknr 131 | Møre og Romsdal, Norway | 12 | 7 | 0 | 1996-09-20 | |
| Blokknr 132 | Møre og Romsdal, Norway | 26 | 12 | 0 | 1996-10-18 | |
| Blokknr 133 | Møre og Romsdal, Norway | 37 | 9 | 0 | 1996-10-22 | |
| Blokknr 2 | Vestfold, Norway | 89 | 7 | 0 | 1996-09-19 | |
| Blokknr 25 | Telemark, Norway | 7 | 4 | 0 | 1995-09-20 | |
| Blokknr 34 | Agder, Norway | 5 | 3 | 0 | 1996-11-10 | |
| Blokknr 34 | Vestland, Norway | 30 | 10 | 0 | 1996-09-24 | |
| Blokknr 35 | Agder, Norway | 4 | 2 | 0 | 1996-10-09 |
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