Klasse: Sea urchins (Echinoidea)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Alsvågen | Nordland, Norway | 16 | 1 | 0 | 1994-11-28 | |
| Alteren | Nordland, Norway | 1 | 1 | 0 | 1999-09-16 | |
| Alvestad-Grøtavær | Troms, Norway | 13 | 1 | 0 | 1993-11-16 | |
| Alvøy (Dåvøy-Nyneset) | Vestland, Norway | 35 | 2 | 0 | 1997-10-06 | |
| Amdam | Møre og Romsdal, Norway | 4 | 2 | 0 | 2000-10-18 | |
| Arendal havneområde | Agder, Norway | 1 | 1 | 0 | 1998-09-26 | |
| Asmaløy | Østfold, Norway | 3 | 1 | 0 | 1994-11-04 | |
| Ausvika | Nordland, Norway | 1 | 1 | 0 | 2018-05-16 | |
| Avaldsnes | Rogaland, Norway | 9 | 2 | 0 | 1995-10-20 | |
| Barneskjær | Vestfold, Norway | 2 | 1 | 0 | 1996-09-26 | |
| Bastøy | Vestfold, Norway | 2 | 1 | 0 | 1993-10-12 | |
| Batnfjordsøra | Møre og Romsdal, Norway | 13 | 2 | 0 | 1996-10-14 | |
| Bergsfjord | Finnmark, Norway | 2 | 1 | 2 | 2021-09-08 | |
| Bjerkvik | Nordland, Norway | 32 | 2 | 0 | 1998-09-29 | |
| Bjoa | Rogaland, Norway | 1 | 1 | 0 | 1993-10-27 | |
| Bjorelvnes, Midt-Troms museum | Troms, Norway | 1 | 1 | 0 | 2024-09-26 | |
| Bjorvika-Melkevika | Vestland, Norway | 1 | 1 | 0 | 1995-10-01 | |
| Bjørnsandfjæra | Nordland, Norway | 1 | 1 | 0 | 1996-09-17 | |
| Blakset | Vestland, Norway | 2 | 1 | 0 | 1994-11-04 | |
| Blakstadbukta-Vollen | Akershus, Norway | 5 | 1 | 0 | 1994-01-13 | |
| Bleikstranda | Nordland, Norway | 13 | 1 | 0 | 1997-10-22 | |
| Blokknr 1 | Møre og Romsdal, Norway | 3 | 1 | 0 | 1996-09-19 | |
| Blokknr 1 | Trøndelag, Norway | 6 | 1 | 0 | 1996-10-23 | |
| Blokknr 118 | Møre og Romsdal, Norway | 7 | 2 | 0 | 1996-09-20 | |
| Blokknr 131 | Møre og Romsdal, Norway | 1 | 1 | 0 | 1996-09-20 | |
| Blokknr 133 | Møre og Romsdal, Norway | 2 | 1 | 0 | 1996-10-22 | |
| Blokknr 2 | Vestfold, Norway | 11 | 1 | 0 | 1996-09-19 | |
| Blokknr 34 | Vestland, Norway | 6 | 2 | 0 | 1996-09-24 | |
| Blokknr 40 | Troms, Norway | 44 | 2 | 0 | 1997-10-09 | |
| Blokknr 54 | Møre og Romsdal, Norway | 1 | 1 | 0 | 1997-10-01 | |
| Blokknr 71 | Nordland, Norway | 5 | 1 | 0 | 1995-10-19 | |
| Bodøsjøen | Nordland, Norway | 2 | 1 | 2 | 2017-05-15 | |
| Bogen | Vestfold, Norway | 12 | 2 | 0 | 1999-10-21 | |
| Bogen | Vestfold, Norway | 3 | 2 | 0 | 1995-10-10 | |
| Botngård | Trøndelag, Norway | 3 | 1 | 0 | 1996-09-18 | |
| Bragdøya | Agder, Norway | 1 | 1 | 0 | 1994-05-27 | |
| Bredvik | Møre og Romsdal, Norway | 1 | 1 | 0 | 1994-11-04 | |
| Brekke | Vestland, Norway | 1 | 1 | 0 | 1993-09-01 | |
| Bryggevika | Nordland, Norway | 13 | 1 | 0 | 1994-11-28 | |
| Budal | Vestfold, Norway | 8 | 1 | 0 | 1994-11-30 | |
| Buøy | Rogaland, Norway | 2 | 1 | 0 | 1999-10-06 | |
| Bygdøy | Oslo, Norway | 2 | 1 | 0 | 1994-12-20 | |
| Bø - Tunge | Rogaland, Norway | 3 | 1 | 0 | 1996-10-02 | |
| Dimna | Møre og Romsdal, Norway | 10 | 1 | 0 | 1994-11-04 | |
| Dirhue | Vestfold, Norway | 3 | 2 | 0 | 1995-10-19 | |
| Draget-Kvitnes | Møre og Romsdal, Norway | 8 | 1 | 0 | 1994-12-01 | |
| Drøbak | Akershus, Norway | 55 | 5 | 31 | 2016-10-23 | |
| Drøbak | Akershus, Norway | 4 | 2 | 0 | 2004-05-04 | |
| Dvergsnestangen Ø | Agder, Norway | 1 | 1 | 0 | 1993-10-05 | |
| Dyrnes | Møre og Romsdal, Norway | 26 | 2 | 0 | 1996-09-20 |