Grøttingsøy
Site 12435 · Frøya municipality · Production area 6, Nordmøre og Sør-Trøndelag
Status unknown: not reported in week 39Operated by Mowi Seawater Norway AS · group Mowi
unknownAdult female lice per fishNo count in week 39. Latest: 0.00 in week 28, 2026
0Weeks above the limit in 2026of 28 weeks with a count
4Lice treatments in 2026Latest: Mechanical delousing, week 17, 2026
1Active disease casesPD, confirmed 21 Oct 2025
2Wellboat visits in 2026by 1 vessel · latest 16 Jan 2026
3Escapes reported1-10 salmon, January 2026
Sea lice against the limit
Weekly average of adult female lice per fish, as reported by the company. For this site the limit is 0.2 in weeks 16–21 and 0.5 for the rest of the year. Hatched weeks have no count and count neither as above nor below.
2026
Show as table
| Week | Adult female lice per fish | Lice limit | Status |
|---|---|---|---|
| 1 | 0.37 | 0.5 | Below the limit |
| 2 | 0.34 | 0.5 | Below the limit |
| 3 | 0.17 | 0.5 | Below the limit |
| 4 | 0.15 | 0.5 | Below the limit |
| 5 | 0.06 | 0.5 | Below the limit |
| 6 | 0.03 | 0.5 | Below the limit |
| 7 | 0.01 | 0.5 | Below the limit |
| 8 | 0.07 | 0.5 | Below the limit |
| 9 | 0.08 | 0.5 | Below the limit |
| 10 | 0.35 | 0.5 | Below the limit |
| 11 | 0.09 | 0.5 | Below the limit |
| 12 | 0.27 | 0.5 | Below the limit |
| 13 | 0.25 | 0.5 | Below the limit |
| 14 | 0.24 | 0.5 | Below the limit |
| 15 | 0.13 | 0.5 | Below the limit |
| 16 | 0.19 | 0.2 | Near the limit |
| 17 | 0.07 | 0.2 | Below the limit |
| 18 | 0.04 | 0.2 | Below the limit |
| 19 | 0.04 | 0.2 | Below the limit |
| 20 | 0.05 | 0.2 | Below the limit |
| 21 | 0.00 | 0.2 | Below the limit |
| 22 | 0.00 | 0.5 | Below the limit |
| 23 | 0.00 | 0.5 | Below the limit |
| 24 | 0.11 | 0.5 | Below the limit |
| 25 | 0.24 | 0.5 | Below the limit |
| 26 | 0.00 | 0.5 | Below the limit |
| 27 | 0.00 | 0.5 | Below the limit |
| 28 | 0.00 | 0.5 | Below the limit |
| 29 | unknown | 0.5 | Not reported |
| 30 | unknown | 0.5 | Not reported |
| 31 | unknown | 0.5 | Not reported |
| 32 | unknown | 0.5 | Not reported |
| 33 | unknown | 0.5 | Not reported |
| 34 | unknown | 0.5 | Not reported |
| 35 | unknown | 0.5 | Not reported |
| 36 | unknown | 0.5 | Not reported |
| 37 | unknown | 0.5 | Not reported |
| 38 | unknown | 0.5 | Not reported |
| 39 | unknown | 0.5 | Not reported |
Earlier years
20255 of 52 weeks with a count above the limit
Show as table
| Week | Adult female lice per fish | Lice limit | Status |
|---|---|---|---|
| 1 | 0.00 | 0.5 | Below the limit |
| 2 | 0.00 | 0.5 | Below the limit |
| 3 | 0.00 | 0.5 | Below the limit |
| 4 | 0.00 | 0.5 | Below the limit |
| 5 | 0.00 | 0.5 | Below the limit |
| 6 | 0.00 | 0.5 | Below the limit |
| 7 | 0.00 | 0.5 | Below the limit |
| 8 | 0.00 | 0.5 | Below the limit |
| 9 | 0.00 | 0.5 | Below the limit |
| 10 | 0.00 | 0.5 | Below the limit |
| 11 | 0.01 | 0.5 | Below the limit |
| 12 | 0.00 | 0.5 | Below the limit |
| 13 | 0.00 | 0.5 | Below the limit |
| 14 | 0.01 | 0.5 | Below the limit |
| 15 | 0.01 | 0.5 | Below the limit |
| 16 | 0.01 | 0.2 | Below the limit |
| 17 | 0.03 | 0.2 | Below the limit |
| 18 | 0.01 | 0.2 | Below the limit |
| 19 | 0.03 | 0.2 | Below the limit |
| 20 | 0.00 | 0.2 | Below the limit |
| 21 | 0.01 | 0.2 | Below the limit |
| 22 | 0.06 | 0.5 | Below the limit |
| 23 | 0.03 | 0.5 | Below the limit |
| 24 | 0.03 | 0.5 | Below the limit |
| 25 | 0.13 | 0.5 | Below the limit |
| 26 | 0.17 | 0.5 | Below the limit |
| 27 | 0.15 | 0.5 | Below the limit |
| 28 | 0.04 | 0.5 | Below the limit |
| 29 | 0.13 | 0.5 | Below the limit |
| 30 | 0.09 | 0.5 | Below the limit |
| 31 | 0.17 | 0.5 | Below the limit |
| 32 | 0.44 | 0.5 | Near the limit |
| 33 | 0.63 | 0.5 | Above the limit |
| 34 | 0.84 | 0.5 | Above the limit |
| 35 | 0.26 | 0.5 | Below the limit |
| 36 | 0.16 | 0.5 | Below the limit |
| 37 | 0.12 | 0.5 | Below the limit |
| 38 | 0.43 | 0.5 | Near the limit |
| 39 | 1.27 | 0.5 | Above the limit |
| 40 | 5.04 | 0.5 | Above the limit |
| 41 | 3.60 | 0.5 | Above the limit |
| 42 | 0.28 | 0.5 | Below the limit |
| 43 | 0.32 | 0.5 | Below the limit |
| 44 | 0.11 | 0.5 | Below the limit |
| 45 | 0.14 | 0.5 | Below the limit |
| 46 | 0.13 | 0.5 | Below the limit |
| 47 | 0.15 | 0.5 | Below the limit |
| 48 | 0.28 | 0.5 | Below the limit |
| 49 | 0.44 | 0.5 | Near the limit |
| 50 | 0.30 | 0.5 | Below the limit |
| 51 | 0.18 | 0.5 | Below the limit |
| 52 | 0.21 | 0.5 | Below the limit |
20240 of 24 weeks with a count above the limit
Show as table
| Week | Adult female lice per fish | Lice limit | Status |
|---|---|---|---|
| 1 | 0.08 | 0.5 | Below the limit |
| 2 | 0.07 | 0.5 | Below the limit |
| 3 | 0.06 | 0.5 | Below the limit |
| 4 | 0.07 | 0.5 | Below the limit |
| 5 | 0.11 | 0.5 | Below the limit |
| 6 | 0.09 | 0.5 | Below the limit |
| 7 | 0.10 | 0.5 | Below the limit |
| 8 | 0.15 | 0.5 | Below the limit |
| 9 | 0.23 | 0.5 | Below the limit |
| 10 | 0.24 | 0.5 | Below the limit |
| 11 | 0.26 | 0.5 | Below the limit |
| 12 | 0.30 | 0.5 | Below the limit |
| 13 | 0.34 | 0.5 | Below the limit |
| 14 | 0.43 | 0.5 | Near the limit |
| 15 | 0.38 | 0.5 | Below the limit |
| 16 | 0.15 | 0.2 | Below the limit |
| 17 | 0.12 | 0.2 | Below the limit |
| 18 | 0.11 | 0.2 | Below the limit |
| 19 | 0.12 | 0.2 | Below the limit |
| 20 | 0.13 | 0.2 | Below the limit |
| 21 | 0.17 | 0.2 | Near the limit |
| 22 | 0.36 | 0.5 | Below the limit |
| 23 | 0.47 | 0.5 | Near the limit |
| 24 | unknown | 0.5 | Reported without a count |
| 25 | unknown | 0.5 | Reported without a count |
| 26 | unknown | 0.5 | Not reported |
| 27 | unknown | 0.5 | Not reported |
| 28 | unknown | 0.5 | Not reported |
| 29 | unknown | 0.5 | Not reported |
| 30 | unknown | 0.5 | Not reported |
| 31 | unknown | 0.5 | Not reported |
| 32 | unknown | 0.5 | Not reported |
| 33 | unknown | 0.5 | Not reported |
| 34 | unknown | 0.5 | Not reported |
| 35 | unknown | 0.5 | Not reported |
| 36 | unknown | 0.5 | Not reported |
| 37 | unknown | 0.5 | Not reported |
| 38 | unknown | 0.5 | Not reported |
| 39 | unknown | 0.5 | Not reported |
| 40 | unknown | 0.5 | Not reported |
| 41 | unknown | 0.5 | Not reported |
| 42 | unknown | 0.5 | Not reported |
| 43 | unknown | 0.5 | Not reported |
| 44 | unknown | 0.5 | Not reported |
| 45 | unknown | 0.5 | Not reported |
| 46 | unknown | 0.5 | Not reported |
| 47 | unknown | 0.5 | Not reported |
| 48 | unknown | 0.5 | Not reported |
| 49 | unknown | 0.5 | Not reported |
| 50 | unknown | 0.5 | Not reported |
| 51 | unknown | 0.5 | Not reported |
| 52 | 0.00 | 0.5 | Below the limit |
20231 of 13 weeks with a count above the limit (data from week 40)
Show as table
| Week | Adult female lice per fish | Lice limit | Status |
|---|---|---|---|
| 40 | 0.25 | 0.5 | Below the limit |
| 41 | 0.42 | 0.5 | Near the limit |
| 42 | 0.86 | 0.5 | Above the limit |
| 43 | 0.04 | 0.5 | Below the limit |
| 44 | 0.13 | 0.5 | Below the limit |
| 45 | 0.13 | 0.5 | Below the limit |
| 46 | 0.07 | 0.5 | Below the limit |
| 47 | 0.10 | 0.5 | Below the limit |
| 48 | 0.23 | 0.5 | Below the limit |
| 49 | 0.42 | 0.5 | Near the limit |
| 50 | 0.30 | 0.5 | Below the limit |
| 51 | 0.09 | 0.5 | Below the limit |
| 52 | 0.20 | 0.5 | Below the limit |
Treatments
Norwegian Food Safety Authority- Week 17, 2026Mechanical delousing7 pens
- Week 11, 2026Mechanical delousing10 pens
- Week 3, 2026Thermal delousing3 pens
- Week 1, 2026Mechanical delousing2 pens
Show all 29
- Week 52, 2025Mechanical delousing1 pen
- Week 51, 2025Mechanical delousing3 pens
- Week 50, 2025Mechanical delousing4 pens
- Week 49, 2025Thermal delousing, Mechanical delousing5 pens
- Week 47, 2025Mechanical delousingWhole site
- Week 44, 2025Mechanical delousingWhole site
- Week 43, 2025Mechanical delousing1 pen
- Week 42, 2025Mechanical delousing8 pens
- Week 41, 2025Thermal delousing3 pens
- Week 40, 2025Thermal delousing5 pens
- Week 37, 2025Mechanical delousingWhole site
- Week 35, 2025Mechanical delousingWhole site
- Week 33, 2025Mechanical delousingWhole site
- Week 30, 2025Mechanical delousing3 pens
- Week 29, 2025Mechanical delousing6 pens
- Week 27, 2025Mechanical delousing6 pens
- Week 16, 2024Mechanical delousing, Thermal delousing6 pens
- Week 15, 2024Mechanical delousing1 pen
- Week 1, 2024Mechanical delousing, Thermal delousing8 pens
- Week 50, 2023Thermal delousing6 pens
- Week 46, 2023Mechanical delousing1 pen
- Week 45, 2023Mechanical delousing9 pens
- Week 43, 2023Mechanical delousingWhole site
- Week 42, 2023Mechanical delousing1 pen
- Week 40, 2023Mechanical delousing1 pen
Disease
Norwegian Food Safety Authority- 21 Oct 2025Pancreas disease (PD): confirmedStatus: active · Subtype SAV2 · started 15 Sep 2025 · Norwegian Food Safety Authority
Escapes
Directorate of Fisheries- 03 Jan 20261-10 salmon escapedCause: Uklart · Directorate of Fisheries
- 20 Nov 20250 salmon escapedCause: Usikker · Directorate of Fisheries
- 22 Aug 20165 salmon escapedCause: Slange · recaptured 1 · Directorate of Fisheries
Wellboat visits
2 visits in 2026Visits are derived by us from the Coastal Administration's AIS positions: a fish carrier stationary within 500 metres of the farm for at least 30 minutes. The AIS archive lags about 17 days. A visit is not proof of infection.
| Arrival | Vessel | Previous farm (14 days) | Duration |
|---|---|---|---|
| 16 Jan 2026 | Froy Saga | Valøyan | 25 h 50 min |
| 16 Jan 2026 | Froy Saga | Valøyan | 8 h 46 min |
| 07 Dec 2025 | Froy Saga | Kveitskjeret | 19 h 11 min |
| 06 Dec 2025 | Froy Saga | Kveitskjeret | 12 h 19 min |
| 16 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 15 h 2 min |
| 15 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 10 h 57 min |
| 14 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 4 h 39 min |
| 13 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 7 h 8 min |
| 13 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 12 h 9 min |
| 12 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 2 h 26 min |
| 11 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 23 h 57 min |
| 07 Oct 2025 | Freyja | Slettholmene disease or zone there | 11 h 2 min |
Show 27 older visits
| Arrival | Vessel | Previous farm (14 days) | Duration |
|---|---|---|---|
| 06 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 10 h 57 min |
| 06 Oct 2025 | Freyja | Slettholmene disease or zone there | 15 h 58 min |
| 05 Oct 2025 | Freyja | Slettholmene disease or zone there | 1 h 32 min |
| 05 Oct 2025 | Freyja | Slettholmene disease or zone there | 8 h 52 min |
| 03 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 3 h 24 min |
| 03 Oct 2025 | Freyja | Slettholmene disease or zone there | 4 h 29 min |
| 03 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 2 h 56 min |
| 02 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 2 h 48 min |
| 02 Oct 2025 | Freyja | Munkskjæra | 10 h 45 min |
| 02 Oct 2025 | Froy Saga | Slettholmene disease or zone there | 3 h 56 min |
| 01 Oct 2025 | Froy Saga | Valøyan | 13 h 0 min |
| 30 Sep 2025 | Froy Saga | Valøyan | 21 h 35 min |
| 08 Jul 2025 | Froy Saga | Tennøya | 26 h 35 min |
| 07 Jul 2025 | Froy Saga | Tennøya | 17 h 12 min |
| 06 Jul 2025 | Froy Saga | Tennøya | 3 h 24 min |
| 05 Jan 2025 | Ronja Evolution | no other farm | 1 h 38 min |
| 03 Jan 2025 | Ronja Evolution | Mannbruholmen | 3 h 4 min |
| 31 Dec 2024 | Ronja Evolution | Mannbruholmen | 2 h 56 min |
| 21 Dec 2024 | Ronja Mistral | Gissøysundet S | 1 h 35 min |
| 20 Dec 2024 | Ronja Mistral | Gissøysundet S | 1 h 23 min |
| 16 Apr 2024 | Freyja | Tranøya N | 15 h 52 min |
| 06 Jan 2024 | Freyja | no other farm | 8 h 2 min |
| 05 Jan 2024 | Froy Jarl | no other farm | 2 h 2 min |
| 05 Jan 2024 | Freyja | no other farm | 18 h 40 min |
| 04 Jan 2024 | Freyja | no other farm | 14 h 16 min |
| 04 Jan 2024 | Froy Jarl | no other farm | 21 h 31 min |
| 03 Jan 2024 | Freyja | no other farm | 8 h 22 min |
Licences
Site MAB: 10,140 tonnes| Licence | Type | Capacity | Holder |
|---|---|---|---|
| NT FA 0002 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 788 t | Mowi Seawater Norway AS |
| ST B 0001 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 788 t | Mowi Seawater Norway AS |
| ST B 0002 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 788 t | Mowi Seawater Norway AS |
| ST F 0001 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 788 t | Mowi Seawater Norway AS |
| ST F 0002 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 1,313 t | Mowi Seawater Norway AS |
| ST F 0009 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 788 t | Mowi Seawater Norway AS |
| ST F 0011 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 788 t | Mowi Seawater Norway AS |
| ST F 0012 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 788 t | Mowi Seawater Norway AS |
| ST F 0015 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 788 t | Mowi Seawater Norway AS |
| ST F 0021 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 788 t | Mowi Seawater Norway AS |
| ST F 0024 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 788 t | Mowi Seawater Norway AS |
| ST H 0047 | Kommersiell / matfiskSalmon, Rainbow trout, Trout | 788 t | Mowi Seawater Norway AS |