Subphylum: Krepsdyr (Crustacea)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Stortjønna Andås | Nordland, Norway | 1 | 1 | 0 | 2013-09-12 | |
| Storåna | Rogaland, Norway | 2 | 2 | 0 | 1997-09-08 | |
| Strand | Vestfold, Norway | 26 | 4 | 0 | 1993-10-21 | |
| Strand | Nordland, Norway | 145 | 6 | 0 | 1996-09-16 | |
| Strand ved VBU | Innlandet, Norway | 5 | 5 | 1 | 2015-08-24 | |
| Stranda | Møre og Romsdal, Norway | 16 | 3 | 0 | 1993-10-08 | |
| Strandstøa | Rogaland, Norway | 4 | 3 | 0 | 1993-11-22 | |
| Strandvik/vinnes | Vestland, Norway | 62 | 5 | 0 | 1996-10-03 | |
| Straume | Vestland, Norway | 2 | 2 | 0 | 2010-09-22 | |
| Straumen | Trøndelag, Norway | 1 | 1 | 0 | 2019-03-25 | |
| Straumsnes | Troms, Norway | 4 | 2 | 1 | 2015-09-29 | |
| Strupen, Halsa | Nordland, Norway | 3 | 3 | 0 | 2013-09-26 | |
| Strynebukta | Vestland, Norway | 1 | 1 | 0 | 1993-10-14 | |
| Strøno | Vestland, Norway | 67 | 5 | 0 | 1996-09-18 | |
| Stølevannet | Vestland, Norway | 3 | 3 | 0 | 1995-10-18 | |
| Stølsviga | Agder, Norway | 6 | 5 | 0 | 2016-05-09 | |
| Stølsvika | Agder, Norway | 13 | 7 | 4 | 2013-09-02 | |
| Støre/Eigerøy | Rogaland, Norway | 294 | 6 | 0 | 2023-09-26 | |
| Støtt | Nordland, Norway | 35 | 5 | 0 | 1996-09-20 | |
| Sula | Trøndelag, Norway | 11 | 5 | 0 | 1997-10-12 | |
| Sundkilen | Telemark, Norway | 9 | 9 | 0 | 1989-09-07 | |
| Sundsleira | Vestland, Norway | 22 | 5 | 0 | 2021-06-08 | |
| Sundvatnet | Nordland, Norway | 1 | 1 | 0 | 2006-07-01 | |
| Sundøy | Nordland, Norway | 4 | 2 | 0 | 1993-10-26 | |
| Svalvann | Nordland, Norway | 1 | 1 | 0 | 2006-08-06 | |
| Svanevatnet | Rogaland, Norway | 24 | 11 | 0 | 1993-05-26 | |
| Svartaholtjørnet | Vestland, Norway | 87 | 26 | 0 | 1997-05-16 | |
| Svartebukta | Nordland, Norway | 1 | 1 | 0 | 2013-09-20 | |
| Svartedabbe 45 | Agder, Norway | 1 | 1 | 0 | 2016-02-10 | |
| Svartelva | Innlandet, Norway | 1 | 1 | 0 | 2004-10-14 | |
| Svartelva, ved Fløta, Ådalsbruk | Innlandet, Norway | 2 | 2 | 0 | 2005-09-21 | |
| Svartputten | Oslo, Norway | 3 | 2 | 0 | 2003-06-06 | |
| Svartvatnet Tortenlia | Nordland, Norway | 1 | 1 | 0 | 2015-09-24 | |
| Svartåstjern | Buskerud, Norway | 2 | 2 | 0 | 1994-06-06 | |
| Sveggøya | Møre og Romsdal, Norway | 73 | 6 | 0 | 1997-10-07 | |
| Svelvik | Buskerud, Norway | 55 | 5 | 0 | 1995-10-09 | |
| Svenåa | Akershus, Norway | 6 | 2 | 0 | 1997-05-28 | |
| Svinna | Østfold, Norway | 2 | 2 | 0 | 1994-06-24 | |
| Sykkylven småbåthamn | Møre og Romsdal, Norway | 1 | 1 | 0 | 2015-12-05 | |
| Syvdefjorden | Møre og Romsdal, Norway | 170 | 5 | 0 | 1997-10-09 | |
| Syvdefjorden | Møre og Romsdal, Norway | 127 | 5 | 0 | 1997-10-09 | |
| Sæbyvannet | Østfold, Norway | 4 | 4 | 0 | 2002-05-30 | |
| Sæbø | Møre og Romsdal, Norway | 38 | 8 | 0 | 2004-10-22 | |
| Sælenvannet | Vestland, Norway | 2 | 2 | 0 | 1991-05-04 | |
| Sætertjern | Akershus, Norway | 23 | 18 | 0 | 1996-10-24 | |
| Sætre skole | Akershus, Norway | 14 | 12 | 0 | 2013-09-27 | |
| Sævelibekken | Agder, Norway | 1 | 1 | 0 | 1993-10-11 | |
| Sømskilen | Agder, Norway | 115 | 5 | 0 | 1997-10-03 | |
| Søndre Aas gård, Holmlia | Oslo, Norway | 3 | 3 | 0 | 2013-06-17 | |
| Søndre Jeløy | Østfold, Norway | 27 | 3 | 0 | 1993-12-07 |
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