Phylum: Articulate animals (Arthropoda)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Østre Tuve-Steinsholtskogen | Vestfold, Norway | 3 | 3 | 1 | 2011-07-30 | |
| Østregate 31 | Innlandet, Norway | 1 | 1 | 1 | 2022-09-18 | |
| Østremneset | Rogaland, Norway | 154 | 74 | 46 | 2023-04-20 | |
| øståsen | Buskerud, Norway | 1 | 1 | 0 | 2008-04-10 | |
| Øverbratta | Innlandet, Norway | 1 | 1 | 1 | 2011-08-03 | |
| Øverdal | Nordland, Norway | 1 | 1 | 0 | 2009-05-18 | |
| Øverfossvegen | Trøndelag, Norway | 5 | 5 | 2 | 2021-06-26 | |
| Øvrabø | Rogaland, Norway | 37 | 35 | 9 | 2010-09-27 | |
| Øvre Alta | Finnmark, Norway | 1 | 1 | 0 | 2013-05-08 | |
| Øvre Brekka | Innlandet, Norway | 1 | 1 | 0 | 2007-04-30 | |
| Øvre Brenn | Innlandet, Norway | 6 | 2 | 0 | 2024-05-03 | |
| Øvre Eidfjord | Vestland, Norway | 81 | 52 | 70 | 2010-05-28 | |
| Øvre Eidfjord | Vestland, Norway | 12 | 12 | 0 | 2007-05-06 | |
| Øvre Eidfjord | Vestland, Norway | 1 | 1 | 0 | 2007-04-24 | |
| Øvre Eknes | Vestland, Norway | 3 | 3 | 1 | 2015-07-05 | |
| Øvre Elnes vei | Akershus, Norway | 1 | 1 | 0 | 2022-07-07 | |
| Øvre Eri | Vestland, Norway | 5 | 5 | 1 | 2009-07-18 | |
| Øvre Godvik | Vestland, Norway | 2 | 2 | 0 | 2018-04-22 | |
| Øvre Hellefossvei | Buskerud, Norway | 1 | 1 | 0 | 2020-04-10 | |
| Øvre Helleland | Vestland, Norway | 6 | 6 | 2 | 2012-05-20 | |
| Øvre Hoelsjø | Akershus, Norway | 1 | 1 | 0 | 1994-09-12 | |
| Øvre Holtet | Troms, Norway | 1 | 1 | 0 | 2012-06-29 | |
| øvre Jøranby | Innlandet, Norway | 1 | 1 | 0 | 2011-04-03 | |
| Øvre Langviksveien 17 | Trøndelag, Norway | 1 | 1 | 0 | 2020-05-06 | |
| Øvre Leirfoss | Trøndelag, Norway | 1 | 1 | 0 | 2010-07-15 | |
| Øvre Leirungen | Innlandet, Norway | 11 | 9 | 4 | 2017-08-13 | |
| Øvre Maudal | Rogaland, Norway | 3 | 1 | 0 | 2019-04-06 | |
| Øvre Mjelde | Vestland, Norway | 5 | 5 | 8 | 2010-05-29 | |
| Øvre Mjølsnes | Rogaland, Norway | 8 | 8 | 2 | 2009-05-30 | |
| Øvre Pasvik camping | Finnmark, Norway | 4 | 4 | 0 | 2015-08-12 | |
| Øvre Storfjordvatnet | Nordland, Norway | 50 | 41 | 0 | 1991-09-04 | |
| Øvre Vassivarvatn | Vestland, Norway | 1 | 1 | 0 | 2006-08-23 | |
| Øvre Årdal | Vestland, Norway | 3 | 3 | 0 | 2010-07-17 | |
| Øvrefoss ved Gausvik | Troms, Norway | 1 | 1 | 1 | 2009-08-15 | |
| Øvresetertjern | Oslo, Norway | 2 | 2 | 0 | 2018-08-05 | |
| Øvsthus, Hosanger | Vestland, Norway | 309 | 171 | 69 | 2016-06-07 | |
| Øvsttunstemmen | Vestland, Norway | 11 | 7 | 1 | 2013-04-24 | |
| Øya i Mosjøen | Nordland, Norway | 1 | 1 | 0 | 2007-04-30 | |
| Øya/stadioen | Trøndelag, Norway | 2 | 1 | 0 | 2009-08-21 | |
| Øyakleiva | Innlandet, Norway | 3 | 3 | 1 | 2017-07-21 | |
| Øyamelen | Trøndelag, Norway | 1 | 1 | 0 | 2011-06-26 | |
| Øyane | Vestland, Norway | 17 | 17 | 0 | 2017-06-24 | |
| Øyane-Skeie | Rogaland, Norway | 18 | 5 | 0 | 1998-06-09 | |
| Øyardalen | Rogaland, Norway | 4 | 4 | 0 | 2011-04-21 | |
| Øydal | Trøndelag, Norway | 25 | 22 | 0 | 2012-06-23 | |
| Øydingen | Trøndelag, Norway | 8 | 8 | 1 | 2008-07-20 | |
| Øye | Agder, Norway | 1 | 1 | 0 | 2017-06-05 | |
| Øyeren, Akershus | Akershus, Norway | 1 | 1 | 0 | 2007-03-29 | |
| Øygården | Nordland, Norway | 2 | 2 | 1 | 2024-05-30 | |
| Øygårdsosen | Nordland, Norway | 2 | 2 | 2 | 2021-05-27 |
Sustain.no is provided by the Norwegian Centre for Science Education