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The Salmon Ledger
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Site 23816 · Nesna municipality · Production area 8, Helgeland til Bodø

Below the lice limit, week 39Operated by Nova Sea Havbruk AS
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0.15Adult 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 39 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026
5Lice treatments in 2026Latest: Mechanical delousing, week 37, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026
0Active disease casesNone recordedRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026
22Wellboat visits in 2026by 4 different vessels · latest 08 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 21–26 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
10.020.5Below the limit
20.020.5Below the limit
30.030.5Below the limit
40.040.5Below the limit
50.040.5Below the limit
60.160.5Below the limit
70.090.5Below the limit
80.190.5Below the limit
90.140.5Below the limit
100.160.5Below the limit
110.190.5Below the limit
120.180.5Below the limit
130.210.5Below the limit
140.220.5Below the limit
150.190.5Below the limit
160.180.5Below the limit
170.160.5Below the limit
180.170.5Below the limit
190.030.5Below the limit
200.090.5Below the limit
210.060.2Below the limit
220.060.2Below the limit
230.070.2Below the limit
240.130.2Below the limit
250.050.2Below the limit
260.030.2Below the limit
270.050.5Below the limit
280.080.5Below the limit
290.220.5Below the limit
300.140.5Below the limit
310.060.5Below the limit
320.060.5Below the limit
330.110.5Below the limit
340.110.5Below the limit
350.140.5Below the limit
360.190.5Below the limit
370.100.5Below the limit
380.170.5Below the limit
390.150.5Below the limit

Earlier years

20250 of 31 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
10.130.5Below the limit
20.160.5Below the limit
30.130.5Below the limit
40.100.5Below the limit
50.160.5Below the limit
60.210.5Below the limit
70.160.5Below the limit
80.270.5Below the limit
90.190.5Below the limit
100.340.5Below the limit
110.400.5Near the limit
120.150.5Below the limit
130.130.5Below the limit
14unknown0.5Reported without a count
15unknown0.5Reported without a count
16unknown0.5Not reported
17unknown0.5Not reported
18unknown0.5Not reported
19unknown0.5Not reported
20unknown0.5Not reported
21unknown0.2Not reported
22unknown0.2Not reported
23unknown0.2Not reported
24unknown0.2Not reported
25unknown0.2Not reported
26unknown0.2Not reported
27unknown0.5Not reported
28unknown0.5Not reported
29unknown0.5Not reported
30unknown0.5Not reported
31unknown0.5Not reported
32unknown0.5Not reported
33unknown0.5Not reported
34unknown0.5Not reported
350.000.5Below the limit
360.000.5Below the limit
370.000.5Below the limit
380.000.5Below the limit
390.000.5Below the limit
400.050.5Below the limit
410.280.5Below the limit
420.480.5Near the limit
430.000.5Below the limit
440.000.5Below the limit
450.000.5Below the limit
460.020.5Below the limit
470.030.5Below the limit
480.020.5Below the limit
490.020.5Below the limit
500.010.5Below the limit
510.010.5Below the limit
520.020.5Below the limit
20241 of 52 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
10.000.5Below the limit
20.000.5Below the limit
30.000.5Below the limit
40.000.5Below the limit
50.000.5Below the limit
60.000.5Below the limit
70.000.5Below the limit
80.000.5Below the limit
90.000.5Below the limit
100.000.5Below the limit
110.000.5Below the limit
120.000.5Below the limit
130.000.5Below the limit
140.000.5Below the limit
150.000.5Below the limit
160.010.5Below the limit
170.000.5Below the limit
180.000.5Below the limit
190.000.5Below the limit
200.000.5Below the limit
210.000.2Below the limit
220.000.2Below the limit
230.000.2Below the limit
240.000.2Below the limit
250.010.2Below the limit
260.050.2Below the limit
270.020.5Below the limit
280.040.5Below the limit
290.040.5Below the limit
300.110.5Below the limit
310.120.5Below the limit
320.420.5Near the limit
330.040.5Below the limit
340.060.5Below the limit
350.040.5Below the limit
360.230.5Below the limit
370.500.5Above the limit
380.050.5Below the limit
390.140.5Below the limit
400.150.5Below the limit
410.110.5Below the limit
420.180.5Below the limit
430.050.5Below the limit
440.070.5Below the limit
450.090.5Below the limit
460.100.5Below the limit
470.260.5Below the limit
480.440.5Near the limit
490.100.5Below the limit
500.220.5Below the limit
510.090.5Below the limit
520.080.5Below the limit
20230 of 3 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
40unknown0.5Not reported
41unknown0.5Not reported
42unknown0.5Not reported
43unknown0.5Not reported
44unknown0.5Not reported
45unknown0.5Not reported
46unknown0.5Not reported
47unknown0.5Not reported
48unknown0.5Not reported
49unknown0.5Not reported
500.000.5Below the limit
510.000.5Below the limit
520.000.5Below the limit

Treatments

Norwegian Food Safety Authority
  • Week 37, 2026
    Mechanical delousing4 pens
  • Week 36, 2026
    Mechanical delousing1 pen
  • Week 31, 2026
    Mechanical delousing1 pen
  • Week 30, 2026
    Mechanical delousing5 pens
Show all 17
  • Week 25, 2026
    Thermal delousingWhole site
  • Week 43, 2025
    Other treatmentWhole site · Thermolicer
  • Week 40, 2025
    Medicinal feedWhole site · Emamectin benzoat
  • Week 51, 2024
    Medicinal bath3 pens · Azamethiphos
  • Week 50, 2024
    Medicinal bath2 pens · Azamethiphos
  • Week 49, 2024
    Other treatment2 pens · Thermolicer, FLS
  • Week 44, 2024
    Other treatment1 pen · FLS
  • Week 43, 2024
    Other treatment5 pens · FLS
  • Week 42, 2024
    Other treatment2 pens · FLS
  • Week 38, 2024
    Other treatment6 pens · FLS
  • Week 37, 2024
    Other treatment2 pens · FLS
  • Week 33, 2024
    Other treatment4 pens · Thermolicer
  • Week 32, 2024
    Other treatmentWhole site · Thermolicer

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

22 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
08 Sep 2026Steinar OlaisenSkauholmen1 h 51 min
08 Sep 2026Steinar OlaisenSkauholmen1 h 49 min
06 Sep 2026Steinar OlaisenSkauholmen33 h 8 min
24 Aug 2026Steinar OlaisenNaustholmen4 h 31 min
14 Aug 2026OddoeyRensøya N28 h 46 min
30 Jul 2026OddoeyRensøya N25 h 31 min
24 Jul 2026Ronja HeroyGyltneset19 h 15 min
23 Jul 2026Ronja HeroyGyltneset21 h 2 min
15 Jul 2026OddoeyRensøya N18 h 22 min
14 Jul 2026OddoeyRensøya N20 h 0 min
28 Jun 2026OddoeySundsøy30 h 49 min
05 Jun 2026OddoeyKokvika27 h 25 min
Show 65 older visits
ArrivalVesselPrevious farm (14 days)Duration
11 May 2026OddoeySundsøy24 h 3 min
01 May 2026Ro NorthHestøy33 h 39 min
30 Apr 2026Ro NorthHestøy2 h 1 min
29 Mar 2026OddoeyVarpet14 h 17 min
28 Mar 2026OddoeyVarpet18 h 26 min
27 Mar 2026OddoeyVarpet1 h 58 min
25 Feb 2026OddoeySkogsholmen4 h 51 min
24 Feb 2026OddoeySkogsholmen7 h 1 min
22 Jan 2026OddoeyKalvhylla11 h 0 min
30 Dec 2025OddoeyVarpet9 h 36 min
21 Dec 2025OddoeyMangvardan8 h 6 min
10 Dec 2025DoennlandGregusvika3 h 56 min
09 Dec 2025DoennlandGregusvika2 h 43 min
09 Dec 2025DoennlandGregusvika2 h 11 min
08 Dec 2025FaeroeysundRenga S1 h 17 min
27 Nov 2025OddoeyVarpet9 h 29 min
26 Nov 2025OddoeyVarpet9 h 56 min
19 Nov 2025DoennlandVarpet2 h 47 min
18 Nov 2025DoennlandVarpet1 h 4 min
07 Oct 2025OddoeyStokkasjøen1 h 47 min
21 Sep 2025OddoeyRensøya N5 h 46 min
07 Sep 2025FaeroeysundHjellberget4 h 26 min
31 Aug 2025FaeroeysundDaumannsvika1 h 12 min
12 Apr 2025Steinar OlaisenBjørnøya1 h 49 min
10 Apr 2025Steinar OlaisenSkauholmen2 h 36 min
09 Apr 2025Steinar OlaisenSkauholmen2 h 39 min
04 Apr 2025Steinar OlaisenSkauholmen2 h 9 min
02 Apr 2025Steinar OlaisenSkauholmen2 h 4 min
01 Apr 2025Steinar OlaisenKokvika2 h 28 min
25 Mar 2025FaeroeysundNaustholmen1 h 19 min
25 Mar 2025FaeroeysundØrnes1 h 33 min
23 Mar 2025FaeroeysundNaustholmen2 h 8 min
17 Mar 2025FaeroeysundMåvær1 h 42 min
13 Mar 2025Steinar OlaisenKokvika2 h 5 min
09 Mar 2025Steinar OlaisenKokvika4 h 0 min
27 Feb 2025FaeroeysundNaustholmen2 h 46 min
17 Feb 2025FaeroeysundSvinvær1 h 45 min
13 Feb 2025FaeroeysundSkauholmen1 h 46 min
11 Feb 2025FaeroeysundSkauholmen2 h 36 min
07 Feb 2025Steinar OlaisenNaustholmen3 h 21 min
04 Feb 2025OddoeyBuktodden Nø8 h 11 min
28 Dec 2024OddoeyKlipen13 h 57 min
27 Dec 2024OddoeyKlipen1 h 59 min
21 Dec 2024Steinar OlaisenSkauholmen1 h 48 min
21 Dec 2024Steinar OlaisenSkauholmen3 h 6 min
21 Dec 2024Steinar OlaisenSkauholmen3 h 54 min
20 Dec 2024Steinar OlaisenSkauholmen3 h 13 min
20 Dec 2024Steinar OlaisenSkauholmen51 min
20 Dec 2024Steinar OlaisenSkauholmen2 h 59 min
19 Dec 2024Steinar OlaisenSkauholmen7 h 5 min
14 Dec 2024Steinar OlaisenMidt Femris1 h 6 min
14 Dec 2024Steinar OlaisenMidt Femris3 h 19 min
14 Dec 2024Steinar OlaisenMidt Femris2 h 38 min
13 Dec 2024Steinar OlaisenMidt Femris1 h 9 min
13 Dec 2024Steinar OlaisenMidt Femris1 h 39 min
30 Nov 2024OddoeyStorvika18 h 6 min
29 Nov 2024OddoeyStorvika2 h 27 min
13 Oct 2024OddoeyKokvika20 h 46 min
13 Oct 2024OddoeyKokvika2 h 8 min
27 Aug 2024OddoeyKokvika16 h 43 min
07 Aug 2024OddoeyVarpet21 h 49 min
22 Jul 2024OddoeyStangholmen16 h 55 min
06 Jul 2024OddoeyBuktodden Nø18 h 11 min
18 May 2024OddoeyKorsvika10 h 56 min
17 Apr 2024OddoeySelsøyvær11 h 22 min

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

Licences

Site MAB: 4,680 tonnes
LicenceTypeCapacityHolder
N G 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout804 tNova Sea Havbruk AS
N G 0032Kommersiell / matfiskSalmon, Rainbow trout, Trout804 tNova Sea Havbruk AS
N L 0009Kommersiell / matfiskSalmon, Rainbow trout, Trout804 tNova Sea Havbruk AS
N ME 0039Kommersiell / matfiskSalmon, Rainbow trout, Trout804 tNova Sea Havbruk AS
N NA 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout804 tTomma Laks AS
N NA 0007Kommersiell / matfiskSalmon, Rainbow trout, Trout804 tTomma Laks AS
N VA 0015Kommersiell / matfiskSalmon, Rainbow trout, Trout987 tVega Sjøfarm AS
N VA 0017Kommersiell / matfiskSalmon, Rainbow trout, Trout804 tVega Sjøfarm AS

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