Mårsanjarga

Site 10814 · Alta municipality · Production area 12, Vest-Finnmark

Status unknown: not reported in week 39Operated by Cermaq Finnmark Farming AS · group Cermaq

unknownAdult female lice per fishNo count in week 39. Latest: 0.18 in week 1, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 1 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

6Wellboat visits in 2026by 2 different vessels · latest 09 Jan 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

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Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.18	0.5	Below the limit
2	unknown	0.5	Reported without a count
3	unknown	0.5	Not reported
4	unknown	0.5	Not reported
5	unknown	0.5	Not reported
6	unknown	0.5	Not reported
7	unknown	0.5	Not reported
8	unknown	0.5	Not reported
9	unknown	0.5	Not reported
10	unknown	0.5	Not reported
11	unknown	0.5	Not reported
12	unknown	0.5	Not reported
13	unknown	0.5	Not reported
14	unknown	0.5	Not reported
15	unknown	0.5	Not reported
16	unknown	0.5	Not reported
17	unknown	0.5	Not reported
18	unknown	0.5	Not reported
19	unknown	0.5	Not reported
20	unknown	0.5	Not reported
21	unknown	0.2	Not reported
22	unknown	0.2	Not reported
23	unknown	0.2	Not reported
24	unknown	0.2	Not reported
25	unknown	0.2	Not reported
26	unknown	0.2	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

Earlier years

20253 of 42 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, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.94	0.5	Above the limit
2	unknown	0.5	Reported without a count
3	1.04	0.5	Above the limit
4	0.04	0.5	Below the limit
5	unknown	0.5	Reported without a count
6	0.08	0.5	Below the limit
7	unknown	0.5	Reported without a count
8	0.06	0.5	Below the limit
9	unknown	0.5	Reported without a count
10	0.09	0.5	Below the limit
11	unknown	0.5	Reported without a count
12	0.14	0.5	Below the limit
13	unknown	0.5	Reported without a count
14	0.07	0.5	Below the limit
15	unknown	0.5	Reported without a count
16	0.06	0.5	Below the limit
17	unknown	0.5	Reported without a count
18	0.04	0.5	Below the limit
19	0.02	0.5	Below the limit
20	0.02	0.5	Below the limit
21	0.09	0.2	Below the limit
22	0.04	0.2	Below the limit
23	0.04	0.2	Below the limit
24	0.09	0.2	Below the limit
25	0.06	0.2	Below the limit
26	0.17	0.2	Near the limit
27	0.10	0.5	Below the limit
28	0.13	0.5	Below the limit
29	0.13	0.5	Below the limit
30	0.14	0.5	Below the limit
31	0.22	0.5	Below the limit
32	0.20	0.5	Below the limit
33	0.43	0.5	Near the limit
34	0.01	0.5	Below the limit
35	0.10	0.5	Below the limit
36	0.09	0.5	Below the limit
37	0.29	0.5	Below the limit
38	0.34	0.5	Below the limit
39	0.20	0.5	Below the limit
40	0.28	0.5	Below the limit
41	0.60	0.5	Above the limit
42	unknown	0.5	Reported without a count
43	0.02	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.06	0.5	Below the limit
47	0.13	0.5	Below the limit
48	0.10	0.5	Below the limit
49	0.23	0.5	Below the limit
50	0.25	0.5	Below the limit
51	unknown	0.5	Reported without a count
52	0.19	0.5	Below the limit

20243 of 30 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
Week	Adult female lice per fish	Lice limit	Status
1	unknown	0.5	Not reported
2	unknown	0.5	Not reported
3	unknown	0.5	Not reported
4	unknown	0.5	Not reported
5	unknown	0.5	Not reported
6	unknown	0.5	Not reported
7	unknown	0.5	Not reported
8	unknown	0.5	Not reported
9	unknown	0.5	Not reported
10	unknown	0.5	Not reported
11	unknown	0.5	Not reported
12	unknown	0.5	Not reported
13	unknown	0.5	Not reported
14	unknown	0.5	Not reported
15	unknown	0.5	Not reported
16	unknown	0.5	Not reported
17	unknown	0.5	Not reported
18	unknown	0.5	Not reported
19	unknown	0.5	Not reported
20	unknown	0.5	Not reported
21	unknown	0.2	Reported without a count
22	0.00	0.2	Below the limit
23	0.00	0.2	Below the limit
24	0.00	0.2	Below the limit
25	0.00	0.2	Below the limit
26	0.00	0.2	Below the limit
27	0.00	0.5	Below the limit
28	0.00	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.00	0.5	Below the limit
31	0.00	0.5	Below the limit
32	0.00	0.5	Below the limit
33	0.01	0.5	Below the limit
34	0.03	0.5	Below the limit
35	0.01	0.5	Below the limit
36	0.03	0.5	Below the limit
37	0.00	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.05	0.5	Below the limit
40	0.21	0.5	Below the limit
41	0.28	0.5	Below the limit
42	0.38	0.5	Below the limit
43	0.34	0.5	Below the limit
44	0.49	0.5	Near the limit
45	0.24	0.5	Below the limit
46	0.24	0.5	Below the limit
47	1.20	0.5	Above the limit
48	1.35	0.5	Above the limit
49	unknown	0.5	Reported without a count
50	1.08	0.5	Above the limit
51	0.31	0.5	Below the limit
52	0.38	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 43, 2025
Freshwater treatment, Mechanical delousing4 pens
Week 39, 2025
Mechanical delousing2 pens
Week 34, 2025
Mechanical delousingWhole site
Week 4, 2025
Freshwater treatment5 pens

Show all 9

Week 3, 2025
Freshwater treatment2 pens
Week 51, 2024
Medicinal bath1 pen · Azamethiphos
Week 50, 2024
Medicinal bath5 pens · Azamethiphos
Week 49, 2024
Medicinal bath1 pen · Azamethiphos
Week 36, 2024
Medicinal feedWhole site · Emamectin benzoat

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

6 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.

Arrival	Vessel	Previous farm (14 days)	Duration
09 Jan 2026	Ro Sunrise	Ytre Simanes	1 h 14 min
08 Jan 2026	Ro Sunrise	Ytre Simanes	1 h 39 min
06 Jan 2026	Ro Sunrise	Ytre Simanes	2 h 28 min
06 Jan 2026	Ro Sunrise	Ytre Simanes	1 h 19 min
04 Jan 2026	Ro Sunrise	Rypefjord	2 h 4 min
01 Jan 2026	Ronja Silver	Steinviknes	2 h 38 min
28 Dec 2025	Ronja Skilsoy	Ytre Simanes	12 h 36 min
22 Oct 2025	Ronja Silver	Ytre Simanes	17 h 15 min
21 Oct 2025	Ronja Silver	Ytre Simanes	9 h 17 min
26 Sep 2025	Ronja Silver	Vannfjorden	10 h 22 min
24 Sep 2025	Ronja Skilsoy	Ytre Simanes	7 h 50 min
23 Sep 2025	Ronja Skilsoy	Skaret	2 h 34 min

Show 23 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
23 Sep 2025	Ronja Skilsoy	Skaret	39 min
06 Sep 2025	Ronja Skilsoy	Skjervøy	6 h 55 min
03 Sep 2025	Ronja Skilsoy	Skaret	9 h 7 min
22 Aug 2025	Ronja Silver	Bergsnes V	12 h 57 min
21 Aug 2025	Ronja Silver	Bergsnes V	9 h 21 min
01 Aug 2025	Ronja Skilsoy	Ytre Simanes	7 h 48 min
24 Jul 2025	Ronja Skilsoy	Skjervøy	11 h 5 min
06 Jul 2025	Ronja Skilsoy	Skaret	4 h 28 min
21 Jan 2025	Ronja Silver	no other farm	9 h 19 min
20 Jan 2025	Ronja Silver	no other farm	8 h 38 min
17 Jan 2025	Ronja Silver	Vegglandet	12 h 5 min
17 Jan 2025	Ronja Silver	Vegglandet	3 h 24 min
17 Dec 2024	Ronja Azul	Laholmen	1 h 42 min
17 Dec 2024	Ronja Azul	Laholmen	2 h 52 min
14 Dec 2024	Ronja Azul	Laholmen	2 h 22 min
14 Dec 2024	Ronja Azul	Laholmen	5 h 7 min
13 Dec 2024	Ronja Azul	Laholmen	3 h 19 min
12 Dec 2024	Ronja Azul	Laholmen	13 h 40 min
12 Dec 2024	Ronja Azul	Laholmen	3 h 3 min
07 Dec 2024	Ronja Azul	Skaret	1 h 12 min
07 Dec 2024	Ronja Azul	Skaret	4 h 34 min
25 May 2024	Ronja Christopher	Laholmen	2 h 38 min
23 May 2024	Ronja Christopher	Laholmen	1 h 15 min

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

Licences

Site MAB: 2,700 tonnes

Licence	Type	Capacity	Holder
F A 0005	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F A 0009	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F A 0032	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F A 0038	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F A 0060	Kommersiell / matfisk-grønn aSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0009	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0017	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0018	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0019	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0023	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0032	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0033	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F HV 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F KD 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F L 0022	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F L 0025	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F L 0026	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F L 0033	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F L 0034	Kommersiell / matfisk-grønn aSalmon, Rainbow trout, Trout	954 t	Cermaq Norway Salmon AS
F NK 0019	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F NK 0020	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F NK 0022	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F NK 0023	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F NK 0024	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F NK 0042	Kommersiell / matfisk-grønn aSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
TF LA 0002	Kommersiell / matfisk-grønn aSalmon, Rainbow trout, Trout	945 t	Cermaq Norway Salmon AS

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