Klasse: Sea urchins (Echinoidea)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Hanøy | Vestland, Norway | 18 | 2 | 0 | 1995-10-11 | |
| Haramsøy | Møre og Romsdal, Norway | 8 | 1 | 0 | 1994-11-04 | |
| Harøy | Møre og Romsdal, Norway | 14 | 2 | 0 | 1998-10-30 | |
| Hauknesfjæra | Nordland, Norway | 1 | 1 | 0 | 2016-09-19 | |
| Heissa | Møre og Romsdal, Norway | 2 | 1 | 0 | 1995-10-27 | |
| Helgeroafjorden | Vestfold, Norway | 4 | 1 | 0 | 1993-12-08 | |
| Hellandsjøen | Trøndelag, Norway | 7 | 2 | 0 | 1996-09-06 | |
| Herdla | Vestland, Norway | 9 | 2 | 0 | 1995-10-06 | |
| Hestvika | Trøndelag, Norway | 10 | 1 | 0 | 1995-01-02 | |
| Hestøya | Troms, Norway | 5 | 1 | 0 | 2016-02-17 | |
| Hetland | Rogaland, Norway | 8 | 2 | 0 | 1996-10-03 | |
| Hetlevik | Vestland, Norway | 16 | 2 | 0 | 1995-10-13 | |
| Hetlevikstraumen | Vestland, Norway | 4 | 1 | 0 | 2022-09-28 | |
| Hisøy | Agder, Norway | 2 | 2 | 0 | 1997-10-02 | |
| Hofles | Trøndelag, Norway | 3 | 1 | 0 | 1994-10-04 | |
| Holm | Nordland, Norway | 4 | 1 | 0 | 1994-11-29 | |
| Holmestrand | Vestfold, Norway | 2 | 2 | 0 | 1998-09-18 | |
| Holmestrand | Vestfold, Norway | 1 | 1 | 0 | 1993-09-03 | |
| Holmfjord | Finnmark, Norway | 1 | 1 | 0 | 2012-10-02 | |
| Holtefjell | Vestfold, Norway | 1 | 1 | 0 | 1993-09-27 | |
| Hommelvik bukta | Trøndelag, Norway | 1 | 1 | 0 | 2008-04-18 | |
| Horten | Vestfold, Norway | 14 | 2 | 0 | 1997-10-07 | |
| Hosteland | Vestland, Norway | 2 | 1 | 0 | 1994-09-01 | |
| Hundvåg | Rogaland, Norway | 5 | 2 | 0 | 1997-10-14 | |
| Hundvåg | Rogaland, Norway | 8 | 2 | 0 | 1997-10-21 | |
| Hvasser | Vestfold, Norway | 2 | 1 | 0 | 1994-11-30 | |
| Hvasser | Vestfold, Norway | 4 | 1 | 0 | 1994-11-30 | |
| Håkjerringberget | Troms, Norway | 2 | 1 | 0 | 2015-07-09 | |
| håkonshella | Vestland, Norway | 3 | 2 | 1 | 2019-06-13 | |
| Håkonshella | Vestland, Norway | 26 | 5 | 15 | 2018-05-24 | |
| Håkonshella | Vestland, Norway | 7 | 1 | 3 | 2020-06-11 | |
| Håkonshella - Pollen | Vestland, Norway | 1 | 1 | 1 | 2015-06-09 | |
| Håkonshellapollen | Vestland, Norway | 28 | 2 | 10 | 2020-06-11 | |
| Håkvik | Nordland, Norway | 9 | 2 | 0 | 1996-10-09 | |
| Hårkollen | Vestfold, Norway | 14 | 2 | 0 | 1998-09-24 | |
| Ilene | Vestfold, Norway | 5 | 1 | 0 | 1997-09-18 | |
| Inderøy | Nordland, Norway | 1 | 1 | 0 | 1994-11-28 | |
| Indre Lafjord | Agder, Norway | 3 | 1 | 0 | 1994-12-02 | |
| Inndyr | Nordland, Norway | 26 | 2 | 0 | 1998-09-28 | |
| Inndyr | Nordland, Norway | 3 | 1 | 0 | 1993-10-04 | |
| Innlandet | Møre og Romsdal, Norway | 3 | 1 | 0 | 1997-10-15 | |
| Innsmøla | Møre og Romsdal, Norway | 16 | 2 | 0 | 1996-09-19 | |
| Innvik | Vestland, Norway | 3 | 1 | 0 | 1993-10-22 | |
| Jansvik | Nordland, Norway | 2 | 1 | 0 | 1994-11-29 | |
| Jomfruland | Telemark, Norway | 2 | 1 | 0 | 1995-09-07 | |
| Judaberg | Rogaland, Norway | 1 | 1 | 0 | 1994-12-20 | |
| Jørstadneset | Rogaland, Norway | 3 | 2 | 0 | 1996-05-29 | |
| Jåsund, Meling, Haga | Rogaland, Norway | 9 | 1 | 0 | 1993-09-28 | |
| Kaldvellfjorden | Agder, Norway | 12 | 2 | 0 | 1998-09-24 | |
| Karlsvikodden | Vestfold, Norway | 3 | 1 | 0 | 1997-10-24 | |
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