Arenicola marina
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Hodne/Reve (Bore) | Rogaland, Norway | 1 | 1 | 0 | 1993-09-01 | |
| Holm | Nordland, Norway | 1 | 1 | 0 | 1994-11-29 | |
| Holmestrand | Vestfold, Norway | 2 | 1 | 0 | 1994-11-10 | |
| Holmestrand | Vestfold, Norway | 10 | 1 | 0 | 1996-09-20 | |
| Holtefjell | Vestfold, Norway | 11 | 1 | 0 | 1998-09-24 | |
| Horten | Vestfold, Norway | 44 | 1 | 0 | 1998-10-08 | |
| Hovedøya | Oslo, Norway | 1 | 1 | 0 | 1996-10-16 | |
| Hundvåg | Rogaland, Norway | 2 | 1 | 0 | 1994-11-28 | |
| Hundvåg | Rogaland, Norway | 7 | 1 | 0 | 1996-10-04 | |
| Hvasser | Vestfold, Norway | 9 | 1 | 0 | 1994-11-30 | |
| Hvasser | Vestfold, Norway | 11 | 1 | 0 | 1996-10-10 | |
| Håkonshella | Vestland, Norway | 3 | 1 | 2 | 2015-06-10 | |
| Håkonshellapollen | Vestland, Norway | 1 | 1 | 0 | 2016-06-09 | |
| Håkvik | Nordland, Norway | 7 | 1 | 0 | 1996-10-09 | |
| Hårkollen | Vestfold, Norway | 24 | 1 | 0 | 1998-09-24 | |
| Håøya | Agder, Norway | 1 | 1 | 0 | 1993-08-30 | |
| Ilene | Vestfold, Norway | 6 | 1 | 0 | 1996-09-26 | |
| Inderøy | Nordland, Norway | 1 | 1 | 0 | 1994-11-28 | |
| Indre Lafjord | Agder, Norway | 6 | 1 | 0 | 1995-09-27 | |
| Indrehavn | Vestfold, Norway | 1 | 1 | 0 | 1993-11-29 | |
| Inndyr | Nordland, Norway | 5 | 1 | 0 | 1994-11-30 | |
| Inndyr | Nordland, Norway | 16 | 1 | 0 | 1998-09-28 | |
| Innlandet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1997-10-15 | |
| Innsmøla | Møre og Romsdal, Norway | 10 | 1 | 0 | 1996-09-19 | |
| Innvik | Vestland, Norway | 1 | 1 | 0 | 1993-10-22 | |
| Judaberg | Rogaland, Norway | 1 | 1 | 0 | 1993-10-08 | |
| Justøya | Agder, Norway | 1 | 1 | 0 | 1996-10-11 | |
| Jørstadneset | Rogaland, Norway | 1 | 1 | 0 | 1994-12-01 | |
| Jåsund, Meling, Haga | Rogaland, Norway | 2 | 1 | 0 | 1993-09-28 | |
| Kaldvellfjorden | Agder, Norway | 7 | 1 | 0 | 1998-09-24 | |
| Karl Johans vern | Vestfold, Norway | 1 | 1 | 0 | 1994-09-23 | |
| Kjøpmannsskjær | Vestfold, Norway | 3 | 1 | 0 | 1993-12-22 | |
| Kleiva | Nordland, Norway | 3 | 1 | 0 | 1993-10-13 | |
| Kleppestø | Vestland, Norway | 1 | 1 | 0 | 1993-09-30 | |
| Klåmbra-Ryggen | Møre og Romsdal, Norway | 1 | 1 | 0 | 1996-09-18 | |
| Kolbeinsrød | Vestfold, Norway | 11 | 1 | 0 | 1996-09-19 | |
| Kollevåg | Vestland, Norway | 1 | 1 | 0 | 1993-11-02 | |
| Kolvereid | Trøndelag, Norway | 4 | 1 | 0 | 1996-09-23 | |
| Kringlevågen | Vestland, Norway | 3 | 1 | 0 | 2001-06-11 | |
| Krogshavn | Telemark, Norway | 1 | 1 | 0 | 1993-09-24 | |
| Kuvågen | Vestland, Norway | 7 | 1 | 0 | 1995-10-17 | |
| Kvaløysletta | Troms, Norway | 3 | 1 | 0 | 1993-11-12 | |
| Kvamsøy | Møre og Romsdal, Norway | 5 | 1 | 0 | 1995-09-18 | |
| Kvernavika | Rogaland, Norway | 1 | 1 | 0 | 1994-09-28 | |
| Kyrksæterøra | Trøndelag, Norway | 28 | 1 | 0 | 1995-06-07 | |
| Lande | Agder, Norway | 4 | 1 | 0 | 1995-09-21 | |
| Langangen | Telemark, Norway | 4 | 1 | 0 | 1999-10-08 | |
| Langøy | Vestfold, Norway | 12 | 1 | 0 | 1998-09-22 | |
| Larkollen | Østfold, Norway | 5 | 1 | 0 | 1995-10-13 | |
| Larvik | Vestfold, Norway | 1 | 1 | 0 | 1993-09-27 |