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The Salmon Ledger
NOEN

Munkholmen

Site 13629 · Tysvær municipality · Production area 2, Ryfylke

Below the lice limit, week 39Operated by Mowi Seawater Norway AS · group Mowi
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0.00Adult female lice per fishLimit 0.50 · below the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026
0Weeks above the limit in 2026of 27 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026
0Lice treatments in 2026None recorded2026 · Norwegian Food Safety Authority · updated 01 Oct 2026
0Active disease casesNone recordedRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026
24Wellboat visits in 2026by 5 different vessels · latest 11 Sep 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026
0Escapes reportedNone reportedSince 2006 · Directorate of Fisheries · updated 01 Oct 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

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026
Show as table
Adult female lice per fish per week, 2026
WeekAdult female lice per fishLice limitStatus
1unknown0.5Reported without a count
2unknown0.5Reported without a count
3unknown0.5Reported without a count
4unknown0.5Not reported
5unknown0.5Not reported
6unknown0.5Not reported
7unknown0.5Not reported
8unknown0.5Not reported
9unknown0.5Not reported
10unknown0.5Not reported
11unknown0.5Not reported
12unknown0.5Not reported
13unknown0.5Not reported
140.000.5Below the limit
150.000.5Below the limit
160.030.2Below the limit
170.010.2Below the limit
180.010.2Below the limit
190.010.2Below the limit
200.010.2Below the limit
210.040.2Below the limit
220.130.5Below the limit
230.160.5Below the limit
240.190.5Below the limit
250.150.5Below the limit
260.070.5Below the limit
270.010.5Below the limit
280.030.5Below the limit
290.010.5Below the limit
300.010.5Below the limit
310.050.5Below the limit
320.010.5Below the limit
330.010.5Below the limit
340.000.5Below the limit
350.010.5Below the limit
360.010.5Below the limit
370.030.5Below the limit
380.030.5Below the limit
390.000.5Below the limit
400.000.5Below the limit

Earlier years

20252 of 46 weeks with a count above the limit
Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026
Show as table
Adult female lice per fish per week, 2025
WeekAdult female lice per fishLice limitStatus
10.290.5Below the limit
20.340.5Below the limit
30.460.5Near the limit
40.140.5Below the limit
50.170.5Below the limit
60.230.5Below the limit
70.220.5Below the limit
80.350.5Below the limit
9unknown0.5Reported without a count
10unknown0.5Not reported
11unknown0.5Not reported
12unknown0.5Not reported
13unknown0.5Not reported
14unknown0.5Not reported
150.000.5Below the limit
160.000.2Below the limit
170.030.2Below the limit
180.020.2Below the limit
190.050.2Below the limit
200.070.2Below the limit
210.050.2Below the limit
220.070.5Below the limit
230.100.5Below the limit
240.050.5Below the limit
250.130.5Below the limit
260.260.5Below the limit
272.180.5Above the limit
280.050.5Below the limit
290.070.5Below the limit
300.160.5Below the limit
310.460.5Near the limit
322.770.5Above the limit
330.180.5Below the limit
340.290.5Below the limit
350.080.5Below the limit
360.060.5Below the limit
370.110.5Below the limit
380.060.5Below the limit
390.260.5Below the limit
400.200.5Below the limit
410.060.5Below the limit
420.180.5Below the limit
430.140.5Below the limit
440.190.5Below the limit
450.170.5Below the limit
460.200.5Below the limit
470.490.5Near the limit
480.060.5Below the limit
490.160.5Below the limit
500.360.5Below the limit
510.490.5Near the limit
520.480.5Near the limit
20240 of 40 weeks with a count above the limit
Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026
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Adult female lice per fish per week, 2024
WeekAdult female lice per fishLice limitStatus
1unknown0.5Reported without a count
2unknown0.5Not reported
3unknown0.5Not reported
4unknown0.5Not reported
5unknown0.5Not reported
6unknown0.5Not reported
7unknown0.5Not reported
8unknown0.5Not reported
9unknown0.5Not reported
10unknown0.5Not reported
11unknown0.5Not reported
12unknown0.5Not reported
130.030.5Below the limit
140.050.5Below the limit
150.010.5Below the limit
160.040.2Below the limit
170.060.2Below the limit
180.050.2Below the limit
190.060.2Below the limit
200.000.2Below the limit
210.010.2Below the limit
220.070.5Below the limit
230.030.5Below the limit
240.060.5Below the limit
250.070.5Below the limit
260.040.5Below the limit
270.030.5Below the limit
280.040.5Below the limit
290.190.5Below the limit
300.070.5Below the limit
310.070.5Below the limit
320.010.5Below the limit
330.010.5Below the limit
340.000.5Below the limit
350.010.5Below the limit
360.020.5Below the limit
370.000.5Below the limit
380.000.5Below the limit
390.000.5Below the limit
400.000.5Below the limit
410.020.5Below the limit
420.000.5Below the limit
430.000.5Below the limit
440.020.5Below the limit
450.020.5Below the limit
460.050.5Below the limit
470.150.5Below the limit
480.150.5Below the limit
490.210.5Below the limit
500.190.5Below the limit
510.150.5Below the limit
520.230.5Below the limit
20230 of 12 weeks with a count above the limit (data from week 40)
Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026
Show as table
Adult female lice per fish per week, 2023
WeekAdult female lice per fishLice limitStatus
400.030.5Below the limit
410.040.5Below the limit
420.010.5Below the limit
430.070.5Below the limit
440.230.5Below the limit
450.090.5Below the limit
460.410.5Near the limit
470.310.5Below the limit
480.100.5Below the limit
490.160.5Below the limit
500.440.5Near the limit
510.190.5Below the limit
52unknown0.5Reported without a count

Treatments

Norwegian Food Safety Authority
  • Week 33, 2025
    Mechanical delousingWhole site
  • Week 28, 2025
    Mechanical delousingWhole site
  • Week 21, 2025
    Thermal delousing4 pens
  • Week 18, 2024
    Medicinal feedWhole site · Emamectin benzoat
Show all 6
  • Week 17, 2024
    Medicinal feedWhole site · Emamectin benzoat
  • Week 47, 2023
    Freshwater treatment1 pen

Disease

Norwegian Food Safety Authority

No cases in the Food Safety Authority's register of notifiable diseases (since 26 Nov 2024).

Escapes

Directorate of Fisheries

No escapes reported from this site since 2006.

Wellboat visits

24 visits in 2026

Visits 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.

ArrivalVesselPrevious farm (14 days)Duration
11 Sep 2026TaurangaTrommo12 h 12 min
06 Sep 2026Taurangano other farm11 h 36 min
04 Sep 2026Taurangano other farm5 h 29 min
02 Sep 2026TaurangaSkorpeosen10 h 46 min
31 Aug 2026TaurangaSkorpeosen10 h 55 min
28 Aug 2026TaurangaSkorpeosen13 h 31 min
26 Aug 2026TaurangaSkorpeosen10 h 1 min
25 Aug 2026Ronja MerdoePinnen4 h 13 min
24 Aug 2026TaurangaSkorpeosen15 h 8 min
25 May 2026Mowi StarTrommo4 h 22 min
06 Apr 2026Ronja MaloyVindsvik1 h 49 min
06 Apr 2026Froy JarlVindsvik1 h 44 min
Show 58 older visits
ArrivalVesselPrevious farm (14 days)Duration
01 Apr 2026Froy JarlVindsvik35 min
31 Mar 2026Ronja MaloyVindsvik1 h 18 min
31 Mar 2026Ronja MaloyVindsvik2 h 22 min
30 Mar 2026Froy JarlVindsvik1 h 32 min
30 Mar 2026Ronja MaloySlåttenes4 h 3 min
13 Jan 2026Ronja MerdoePinnen6 h 44 min
12 Jan 2026TaurangaPinnen9 h 22 min
11 Jan 2026Ronja MerdoePinnen2 h 6 min
08 Jan 2026Ronja MerdoePinnen6 h 25 min
04 Jan 2026Ronja MerdoePinnen3 h 33 min
01 Jan 2026Ronja Merdoeno other farm5 h 51 min
29 Dec 2025TaurangaLangavika5 h 45 min
28 Dec 2025Ronja MerdoeUtåker5 h 44 min
26 Dec 2025Ronja MerdoeUtåker6 h 47 min
12 Nov 2025TaurangaOksen10 h 30 min
03 Nov 2025TaurangaHettaneset8 h 54 min
17 Jul 2025NavoeyHaugsnesvåg3 h 57 min
24 May 2025Ronja MaloyLindvik2 h 20 min
23 May 2025NavoeyMælen2 h 39 min
23 May 2025Ronja BoroySmedholmen16 h 57 min
23 May 2025Ronja MaloyLindvik16 h 25 min
21 May 2025Ronja MaloyLindvik23 h 4 min
20 May 2025Ronja MaloyLindvik19 h 28 min
19 May 2025Ronja MaloyLindvik10 h 27 min
18 May 2025Ronja MaloyLindvik13 h 47 min
17 May 2025Ronja MaloyLindvik19 h 42 min
06 Apr 2025Ronja MaloyVindsvik3 h 24 min
06 Apr 2025Ronja MaloyVindsvik55 min
05 Apr 2025Ronja MaloyVindsvik1 h 4 min
05 Apr 2025Ronja MaloyVindsvik1 h 8 min
25 Feb 2025Ronja EvolutionEggesbønes2 h 53 min
24 Feb 2025Ronja EvolutionEggesbønes3 h 7 min
24 Feb 2025Ronja EvolutionEggesbønes2 h 18 min
21 Feb 2025Ronja EvolutionØklandsvågen4 h 19 min
18 Feb 2025Ronja EvolutionØklandsvågen3 h 5 min
02 Feb 2025Ronja MerdoeHøysteinen3 h 56 min
29 Jan 2025TaurangaNapp6 h 42 min
28 Jan 2025Ronja MerdoeSvåsandneset1 h 58 min
27 Jan 2025TaurangaNapp8 h 32 min
26 Jan 2025Ronja MerdoeSvåsandneset2 h 51 min
26 Dec 2024Ronja MerdoeDjupevik6 h 47 min
22 Dec 2024Ronja MerdoeDjupevik7 h 52 min
18 Nov 2024TaurangaÅkre11 h 11 min
14 Nov 2024Ronja MerdoeSvåsandneset4 h 33 min
13 Nov 2024TaurangaÅkre12 h 15 min
08 Nov 2024TaurangaKobbavika9 h 27 min
16 Aug 2024TaurangaSkipningsdalen6 h 24 min
29 Jul 2024NavoeyHaugsnesvåg5 h 45 min
20 Jun 2024NeptunHaugsnesvåg2 h 42 min
18 Jun 2024NeptunHaugsnesvåg3 h 46 min
23 Mar 2024Ronja MaloyVindsvik3 h 12 min
23 Mar 2024Ronja MaloyVindsvik58 min
21 Mar 2024Ronja MaloyVindsvik1 h 21 min
21 Mar 2024Ronja MaloyVindsvik32 min
04 Jan 2024Ronja Merdoeno other farm7 h 38 min
03 Jan 2024Taurangano other farm5 h 44 min
02 Jan 2024Ronja Merdoeno other farm9 h 37 min
01 Jan 2024Taurangano other farm10 h 42 min

Source: Norwegian Coastal Administration (AIS) · calculated by the Salmon Ledger · updated 01 Oct 2026

Licences

Site MAB: 4,680 tonnes
LicenceTypeCapacityHolder
R F 0003Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R HM 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R HM 0002Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R ST 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R TV 0002Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R TV 0004Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R V 0004Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS

Source: Directorate of Fisheries, aquaculture register · updated 01 Oct 2026