Mortensnes

Site 10794 · Alta municipality · Production area 12, Vest-Finnmark

Below the lice limit, week 39Operated by Salmar Oppdrett AS · group SalMar

0.04Adult 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 18 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

1Lice treatments in 2026Latest: Medicinal feed, week 34, 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

4Wellboat visits in 2026by 4 different vessels · latest 15 Jul 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported1-10 salmon, July 2026Since 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	unknown	0.5	Reported without a count
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	Not reported
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	0.04	0.5	Below the limit
33	0.03	0.5	Below the limit
34	0.07	0.5	Below the limit
35	0.11	0.5	Below the limit
36	0.15	0.5	Below the limit
37	0.29	0.5	Below the limit
38	0.07	0.5	Below the limit
39	0.04	0.5	Below the limit

Earlier years

20250 of 45 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	0.03	0.5	Below the limit
2	0.03	0.5	Below the limit
3	0.06	0.5	Below the limit
4	0.06	0.5	Below the limit
5	0.08	0.5	Below the limit
6	0.07	0.5	Below the limit
7	0.04	0.5	Below the limit
8	unknown	0.5	Reported without a count
9	0.16	0.5	Below the limit
10	unknown	0.5	Reported without a count
11	0.14	0.5	Below the limit
12	unknown	0.5	Reported without a count
13	0.13	0.5	Below the limit
14	unknown	0.5	Reported without a count
15	0.09	0.5	Below the limit
16	unknown	0.5	Reported without a count
17	0.08	0.5	Below the limit
18	unknown	0.5	Reported without a count
19	0.07	0.5	Below the limit
20	0.05	0.5	Below the limit
21	0.07	0.2	Below the limit
22	0.06	0.2	Below the limit
23	0.08	0.2	Below the limit
24	0.02	0.2	Below the limit
25	0.06	0.2	Below the limit
26	0.05	0.2	Below the limit
27	0.04	0.5	Below the limit
28	0.03	0.5	Below the limit
29	0.01	0.5	Below the limit
30	0.00	0.5	Below the limit
31	0.06	0.5	Below the limit
32	0.04	0.5	Below the limit
33	0.04	0.5	Below the limit
34	0.01	0.5	Below the limit
35	0.06	0.5	Below the limit
36	0.02	0.5	Below the limit
37	0.02	0.5	Below the limit
38	0.04	0.5	Below the limit
39	0.20	0.5	Below the limit
40	0.20	0.5	Below the limit
41	0.43	0.5	Near the limit
42	0.48	0.5	Near the limit
43	0.49	0.5	Near the limit
44	0.48	0.5	Near the limit
45	0.23	0.5	Below the limit
46	0.28	0.5	Below the limit
47	0.23	0.5	Below the limit
48	0.28	0.5	Below the limit
49	0.38	0.5	Below the limit
50	0.38	0.5	Below the limit
51	0.45	0.5	Near the limit
52	unknown	0.5	Reported without a count

20241 of 38 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	0.24	0.5	Below the limit
2	0.21	0.5	Below the limit
3	unknown	0.5	Reported without a count
4	0.20	0.5	Below the limit
5	unknown	0.5	Reported without a count
6	0.15	0.5	Below the limit
7	unknown	0.5	Reported without a count
8	0.18	0.5	Below the limit
9	unknown	0.5	Not reported
10	0.20	0.5	Below the limit
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	0.00	0.2	Below the limit
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	0.01	0.5	Below the limit
31	0.03	0.5	Below the limit
32	0.04	0.5	Below the limit
33	0.06	0.5	Below the limit
34	0.04	0.5	Below the limit
35	0.03	0.5	Below the limit
36	0.00	0.5	Below the limit
37	0.07	0.5	Below the limit
38	0.04	0.5	Below the limit
39	0.17	0.5	Below the limit
40	0.25	0.5	Below the limit
41	0.28	0.5	Below the limit
42	0.34	0.5	Below the limit
43	0.75	0.5	Above the limit
44	0.37	0.5	Below the limit
45	0.10	0.5	Below the limit
46	0.03	0.5	Below the limit
47	0.09	0.5	Below the limit
48	0.05	0.5	Below the limit
49	0.11	0.5	Below the limit
50	0.09	0.5	Below the limit
51	0.07	0.5	Below the limit
52	0.04	0.5	Below the limit

20230 of 13 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

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Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
40	0.38	0.5	Below the limit
41	0.06	0.5	Below the limit
42	0.09	0.5	Below the limit
43	0.15	0.5	Below the limit
44	0.18	0.5	Below the limit
45	0.24	0.5	Below the limit
46	0.20	0.5	Below the limit
47	0.31	0.5	Below the limit
48	0.22	0.5	Below the limit
49	0.38	0.5	Below the limit
50	0.43	0.5	Near the limit
51	0.06	0.5	Below the limit
52	0.19	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 34, 2026
Medicinal feedWhole site · Emamectin benzoat
Week 45, 2024
Mechanical delousing2 pens
Week 44, 2024
Mechanical delousing5 pens
Week 42, 2024
Medicinal feedWhole site · Emamectin benzoat

Show all 9

Week 35, 2024
Medicinal feed2 pens · Emamectin benzoat
Week 33, 2024
Medicinal feed5 pens · Emamectin benzoat
Week 52, 2023
Other treatment2 pens · Thermolicer
Week 51, 2023
Other treatment5 pens · Ferskvannsbehandling, Thermolicer
Week 41, 2023
Other treatment5 pens · Hydrolicer

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

23 Jul 2026
1-10 salmon escapedDirectorate of Fisheries

Wellboat visits

4 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
15 Jul 2026	Ronja Aurora	Lausund	1 h 16 min
25 May 2026	Ronja Vita	Øyra	7 h 15 min
04 Jan 2026	Aasvaerfjord	Klubben	2 h 37 min
04 Jan 2026	Ro Senja	Vindhammarneset	3 h 25 min
07 Dec 2025	Ro Senja	Brensholmen	7 h 22 min
03 Nov 2025	Ro Senja	Indre Bringenes	1 h 54 min
28 Oct 2025	Froy Odin	Oterneset	2 h 29 min
26 Oct 2025	Ronja Vita	Klubben	3 h 40 min
20 Oct 2025	Ronja Vita	Øyra	2 h 39 min
25 Sep 2025	Ro Master	Kraken	5 h 42 min
25 Sep 2025	Ro Sailor	Klubben	3 h 4 min
23 Sep 2025	Ro Sailor	Mollvika	4 h 7 min

Show 19 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
04 Sep 2025	Ro Sailor	Klubben	2 h 8 min
03 Sep 2025	Ro Sailor	Svartberget	2 h 31 min
02 Sep 2025	Ro Senja	Korsnes	3 h 59 min
15 Aug 2025	Ro Spirit	Klubben	2 h 7 min
03 Nov 2024	Ro Senja	Store Kobbøy	42 h 29 min
02 Nov 2024	Ro Senja	Store Kobbøy	8 h 48 min
04 Aug 2024	Ronja Aurora	Mollvika	1 h 1 min
30 May 2024	Ronja Aurora	Korsnes	6 h 46 min
18 May 2024	Ro Vision	Bondejorda	2 h 22 min
09 Mar 2024	Aasvaerfjord	Klubben	1 h 48 min
05 Mar 2024	Aasvaerfjord	Klubben	1 h 34 min
27 Feb 2024	Aasvaerfjord	Klubben	1 h 11 min
26 Feb 2024	Aasvaerfjord	Klubben	1 h 57 min
25 Feb 2024	Aasvaerfjord	Klubben	1 h 44 min
23 Feb 2024	Aasvaerfjord	Klubben	3 h 4 min
22 Feb 2024	Aasvaerfjord	Klubben	2 h 20 min
22 Feb 2024	Ro Master	Klubben	2 h 10 min
16 Feb 2024	Ro Master	Klubben	4 h 36 min
15 Feb 2024	Ro Master	Klubben	2 h 52 min

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

Licences

Site MAB: 5,400 tonnes

Licence	Type	Capacity	Holder
F A 0010	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	984 t	Salmar Oppdrett AS
F A 0043	Kommersiell / matfiskSalmon, Rainbow trout, Trout	984 t	Salmar Oppdrett AS
F A 0044	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	984 t	Salmar Oppdrett AS
F A 0059	Kommersiell / matfiskSalmon, Rainbow trout, Trout	984 t	Salmar Oppdrett AS
F A 0068	Visning / matfiskSalmon, Rainbow trout, Trout	780 t	Salmar Farming AS
F L 0023	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	984 t	Salmar Oppdrett AS
F L 0024	Kommersiell / matfiskSalmon, Rainbow trout, Trout	984 t	Salmar Oppdrett AS
F LB 0013	Kommersiell / matfiskSalmon, Rainbow trout, Trout	984 t	Salmar Oppdrett AS
TF H 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,061 t	Salmar Oppdrett AS

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