Phylum: Sponges (Porifera)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Bekkevika | Vestfold, Norway | 1 | 1 | 0 | 2014-09-24 | |
| Bragdøya | Agder, Norway | 1 | 1 | 0 | 1994-06-09 | |
| Drøbak | Akershus, Norway | 5 | 2 | 5 | 2015-10-07 | |
| Dusavik | Rogaland, Norway | 1 | 1 | 1 | 2022-05-24 | |
| Dybdalstrand | Agder, Norway | 2 | 1 | 2 | 2017-09-20 | |
| Elingaardskilen | Østfold, Norway | 1 | 1 | 0 | 1994-09-29 | |
| Englan | Nordland, Norway | 2 | 2 | 0 | 1994-11-09 | |
| Espegrend | Vestland, Norway | 1 | 1 | 0 | 2001-01-24 | |
| Fjæra på Skjelnan | Troms, Norway | 1 | 1 | 0 | 2007-06-07 | |
| foldnes | Vestland, Norway | 1 | 1 | 0 | 2006-04-21 | |
| Grunningen | Innlandet, Norway | 1 | 1 | 0 | 2012-09-20 | |
| Halten | Trøndelag, Norway | 1 | 1 | 0 | 1994-06-03 | |
| Hansbakkfjæra | Trøndelag, Norway | 1 | 1 | 0 | 2018-05-24 | |
| Helgeroafjorden | Vestfold, Norway | 3 | 1 | 0 | 1993-12-08 | |
| Håkonshella | Vestland, Norway | 2 | 1 | 2 | 2015-09-30 | |
| Håkonshellapollen | Vestland, Norway | 5 | 1 | 4 | 2020-06-11 | |
| Jomfruland | Telemark, Norway | 2 | 2 | 2 | 2013-05-14 | |
| kallagbakken | Rogaland, Norway | 1 | 1 | 0 | 2020-06-04 | |
| kjellsrudbekken | Innlandet, Norway | 1 | 1 | 0 | 2004-10-15 | |
| Korssjøen | Vestfold, Norway | 1 | 1 | 0 | 1989-09-06 | |
| Kårvåg | Møre og Romsdal, Norway | 1 | 1 | 1 | 2019-06-11 | |
| Langavatnet | Vestland, Norway | 1 | 1 | 0 | 1989-08-31 | |
| Ormefjorden | Telemark, Norway | 1 | 1 | 0 | 1994-05-04 | |
| Storeidvatnet | Nordland, Norway | 2 | 2 | 0 | 1998-09-07 | |
| Torvangerfjæra | Vestland, Norway | 1 | 1 | 0 | 2002-10-08 | |
| Tuvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 2001-06-11 | |
| Vestre Åmøy | Rogaland, Norway | 1 | 1 | 0 | 1993-10-11 | |
| Øvre Storfjordvatnet | Nordland, Norway | 1 | 1 | 0 | 1989-09-01 | |