Phylum: Echinoderms (Echinodermata)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Sandholna | Vestland, Norway | 9 | 3 | 1 | 2019-05-24 | |
| Sandhornøy | Nordland, Norway | 8 | 2 | 0 | 1994-10-17 | |
| Sandvika | Finnmark, Norway | 18 | 3 | 0 | 1995-09-14 | |
| Sandvika | Rogaland, Norway | 22 | 4 | 0 | 1999-09-29 | |
| Sandviksfjæra | Nordland, Norway | 1 | 1 | 0 | 2021-08-27 | |
| Sandøy | Møre og Romsdal, Norway | 2 | 1 | 0 | 1994-12-01 | |
| Sandå-Skarestrand | Agder, Norway | 30 | 3 | 0 | 1995-09-21 | |
| Sandåvika | Nordland, Norway | 1 | 1 | 0 | 1994-11-29 | |
| Saura | Nordland, Norway | 24 | 4 | 0 | 1995-10-03 | |
| Selje | Vestland, Norway | 14 | 4 | 0 | 1995-09-21 | |
| Senjahopen | Troms, Norway | 3 | 2 | 0 | 1995-03-17 | |
| Senjahopen | Troms, Norway | 2 | 1 | 0 | 1993-11-15 | |
| Sigerfjord | Nordland, Norway | 26 | 3 | 0 | 1998-10-06 | |
| Silsand | Troms, Norway | 1 | 1 | 0 | 1993-09-21 | |
| Sirevåg-Ogna-Varden | Rogaland, Norway | 24 | 4 | 0 | 1996-09-26 | |
| Skallevold | Vestfold, Norway | 1 | 1 | 0 | 2001-03-21 | |
| Skarbo | Telemark, Norway | 42 | 4 | 0 | 1996-08-27 | |
| Skattval | Trøndelag, Norway | 2 | 2 | 1 | 2020-06-10 | |
| Skaug | Nordland, Norway | 19 | 2 | 0 | 1994-11-29 | |
| Skinnfelltangen | Agder, Norway | 7 | 1 | 0 | 1993-09-16 | |
| Skjebergkilen | Østfold, Norway | 10 | 3 | 0 | 1995-09-25 | |
| Skjellvika | Vestfold, Norway | 10 | 1 | 0 | 1993-09-17 | |
| Skjernøya | Agder, Norway | 39 | 4 | 0 | 1995-09-21 | |
| Skjoldabukta | Vestland, Norway | 3 | 2 | 2 | 2017-10-05 | |
| Skjærvøya | Trøndelag, Norway | 11 | 2 | 0 | 1993-10-13 | |
| Skogerøya | Agder, Norway | 50 | 4 | 0 | 1997-10-02 | |
| Skoklefald | Akershus, Norway | 11 | 2 | 0 | 1993-10-13 | |
| Skottevig | Agder, Norway | 19 | 4 | 0 | 1995-10-09 | |
| Skottevik | Agder, Norway | 9 | 3 | 9 | 2013-09-19 | |
| Skånevik | Vestland, Norway | 37 | 4 | 0 | 1996-10-04 | |
| Skåraneset | Rogaland, Norway | 10 | 3 | 0 | 1995-10-02 | |
| Skåtøy | Telemark, Norway | 2 | 1 | 0 | 1995-01-02 | |
| Slagen | Vestfold, Norway | 45 | 4 | 0 | 1997-09-25 | |
| Slemmestad | Akershus, Norway | 13 | 4 | 0 | 1996-09-16 | |
| Slåttvika | Nordland, Norway | 1 | 1 | 0 | 1994-11-30 | |
| Småvågane | Rogaland, Norway | 1 | 1 | 1 | 2016-06-10 | |
| Sola | Rogaland, Norway | 8 | 4 | 0 | 1995-09-08 | |
| Sola | Rogaland, Norway | 4 | 4 | 0 | 1995-09-08 | |
| Solastranda og Ølberg | Rogaland, Norway | 17 | 2 | 0 | 2005-06-10 | |
| Solveig fjæra | Troms, Norway | 1 | 1 | 0 | 2017-09-01 | |
| Solvorn | Vestland, Norway | 2 | 1 | 0 | 1993-11-29 | |
| Songebukta | Agder, Norway | 17 | 2 | 0 | 1994-12-05 | |
| Sortland | Nordland, Norway | 45 | 4 | 0 | 1996-10-02 | |
| Spervik | Vestfold, Norway | 22 | 3 | 0 | 1996-09-24 | |
| Spildepollen | Vestland, Norway | 8 | 4 | 0 | 1996-10-18 | |
| Spildra | Nordland, Norway | 29 | 3 | 0 | 1998-10-07 | |
| Stangodden | Agder, Norway | 4 | 1 | 0 | 1993-10-17 | |
| Stathelle | Telemark, Norway | 21 | 3 | 0 | 1998-09-23 | |
| Statland | Trøndelag, Norway | 3 | 3 | 0 | 1996-06-19 | |
| Stavern | Vestfold, Norway | 16 | 4 | 0 | 1999-09-29 | |
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