Oligochaeta
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Stensrudtjern | Oslo, Norway | 1 | 1 | 0 | 1989-09-21 | |
| Stignavatnet | Vestland, Norway | 1 | 1 | 0 | 2002-04-16 | |
| Stokkavatnet | Rogaland, Norway | 1 | 1 | 0 | 2001-05-07 | |
| Stokkbekken | Trøndelag, Norway | 1 | 1 | 0 | 1994-06-14 | |
| Stokkedammen | Trøndelag, Norway | 1 | 1 | 0 | 2013-09-12 | |
| Stokmarknes, Vesterålen | Nordland, Norway | 1 | 1 | 1 | 2014-09-23 | |
| Storavatnet | Vestland, Norway | 2 | 2 | 0 | 1990-08-15 | |
| Store Bjørnevatnet | Agder, Norway | 1 | 1 | 0 | 1989-08-30 | |
| Store Nesttunvann | Vestland, Norway | 6 | 5 | 0 | 2013-04-23 | |
| Storefoss | Innlandet, Norway | 2 | 2 | 2 | 2010-09-08 | |
| Storeidvatnet | Nordland, Norway | 1 | 1 | 0 | 1998-09-07 | |
| Storelva | Møre og Romsdal, Norway | 2 | 1 | 0 | 1994-09-13 | |
| Storetjørna | Vestland, Norway | 2 | 1 | 0 | 1998-05-20 | |
| Storjord | Nordland, Norway | 39 | 7 | 0 | 2006-06-01 | |
| Stortjønna Andås | Nordland, Norway | 1 | 1 | 0 | 2013-09-12 | |
| Storvannet | Nordland, Norway | 3 | 3 | 0 | 1990-09-07 | |
| Storvatnet | Trøndelag, Norway | 2 | 1 | 0 | 2004-09-14 | |
| Storvatnet | Trøndelag, Norway | 1 | 1 | 0 | 2004-08-14 | |
| Storvik | Trøndelag, Norway | 2 | 2 | 0 | 2022-05-23 | |
| Storåna | Rogaland, Norway | 1 | 1 | 0 | 1997-09-08 | |
| Straumen | Nordland, Norway | 23 | 4 | 17 | 2010-09-22 | |
| Stølen | Vestland, Norway | 6 | 3 | 4 | 2010-09-30 | |
| Sunnheia | Agder, Norway | 1 | 1 | 0 | 2010-10-08 | |
| Svadberg | Rogaland, Norway | 3 | 3 | 2 | 2010-09-17 | |
| Svanevatnet | Rogaland, Norway | 3 | 1 | 0 | 1993-05-26 | |
| Svartaholtjørnet | Vestland, Norway | 2 | 1 | 0 | 1992-05-19 | |
| Svartåstjern | Buskerud, Norway | 2 | 1 | 0 | 1993-06-03 | |
| Svenåa | Akershus, Norway | 4 | 1 | 0 | 1997-05-28 | |
| Svinna | Østfold, Norway | 1 | 1 | 0 | 1994-06-24 | |
| Svinndal | Østfold, Norway | 11 | 6 | 10 | 2010-09-28 | |
| Sylling | Buskerud, Norway | 2 | 1 | 2 | 2010-09-22 | |
| Sætre skole | Akershus, Norway | 1 | 1 | 0 | 2013-09-27 | |
| Sævelibekken | Agder, Norway | 5 | 1 | 0 | 1994-10-24 | |
| Søndre Aas gård, Holmlia | Oslo, Norway | 1 | 1 | 0 | 2013-06-17 | |
| Sørborg | Vestland, Norway | 6 | 3 | 2 | 2014-08-31 | |
| Tangane | Telemark, Norway | 1 | 1 | 0 | 2013-09-20 | |
| Tanum | Vestfold, Norway | 3 | 3 | 0 | 2002-09-16 | |
| Tanumbekken | Akershus, Norway | 18 | 11 | 0 | 2010-05-07 | |
| Terrenget bak skolen | Troms, Norway | 13 | 5 | 5 | 2010-09-19 | |
| Tjørnadalstjørni (Vaksdal, Bergsdalen) | Vestland, Norway | 3 | 1 | 0 | 2012-09-18 | |
| Tomaso | Vestland, Norway | 1 | 1 | 1 | 2012-06-13 | |
| Tornesvatnet | Rogaland, Norway | 14 | 8 | 0 | 1992-09-15 | |
| Torvikelva | Møre og Romsdal, Norway | 3 | 1 | 0 | 1994-11-09 | |
| Torød skole område | Vestfold, Norway | 8 | 6 | 7 | 2010-09-28 | |
| Tovegstjørn, Bolstadhaugen | Vestland, Norway | 1 | 1 | 0 | 2015-11-15 | |
| Trones | Trøndelag, Norway | 6 | 6 | 0 | 2010-10-01 | |
| Trytetjønnet | Buskerud, Norway | 1 | 1 | 0 | 1989-09-08 | |
| Tussebekken | Akershus, Norway | 2 | 1 | 0 | 1994-09-05 | |
| Tussvatnet | Nordland, Norway | 2 | 2 | 0 | 1990-06-07 | |
| Tuven | Nordland, Norway | 4 | 4 | 0 | 2010-09-07 |