Melkøya

Site 31637 · Herøy i Nordland municipality · Production area 8, Helgeland til Bodø

Below the lice limit, week 39Operated by Kobbvåglaks AS · group unknown

0.01Adult 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 6 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

1Wellboat visits in 2026by 1 vessel · latest 11 Aug 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	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	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	Reported without a count
34	0.00	0.5	Below the limit
35	0.00	0.5	Below the limit
36	0.00	0.5	Below the limit
37	0.00	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.01	0.5	Below the limit

Earlier years

20256 of 48 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	0.19	0.5	Below the limit
2	0.15	0.5	Below the limit
3	0.15	0.5	Below the limit
4	0.21	0.5	Below the limit
5	0.19	0.5	Below the limit
6	0.22	0.5	Below the limit
7	0.26	0.5	Below the limit
8	0.28	0.5	Below the limit
9	0.20	0.5	Below the limit
10	0.15	0.5	Below the limit
11	0.12	0.5	Below the limit
12	0.21	0.5	Below the limit
13	0.24	0.5	Below the limit
14	0.20	0.5	Below the limit
15	0.21	0.5	Below the limit
16	0.19	0.5	Below the limit
17	0.20	0.5	Below the limit
18	0.25	0.5	Below the limit
19	0.26	0.5	Below the limit
20	0.26	0.5	Below the limit
21	0.16	0.2	Below the limit
22	0.12	0.2	Below the limit
23	0.16	0.2	Below the limit
24	0.13	0.2	Below the limit
25	0.19	0.2	Near the limit
26	0.25	0.2	Above the limit
27	0.47	0.5	Near the limit
28	0.44	0.5	Near the limit
29	0.20	0.5	Below the limit
30	0.41	0.5	Near the limit
31	0.95	0.5	Above the limit
32	1.54	0.5	Above the limit
33	0.18	0.5	Below the limit
34	0.38	0.5	Below the limit
35	0.46	0.5	Near the limit
36	0.08	0.5	Below the limit
37	0.45	0.5	Near the limit
38	0.93	0.5	Above the limit
39	0.13	0.5	Below the limit
40	0.35	0.5	Below the limit
41	0.39	0.5	Below the limit
42	0.09	0.5	Below the limit
43	0.83	0.5	Above the limit
44	0.05	0.5	Below the limit
45	0.30	0.5	Below the limit
46	0.39	0.5	Below the limit
47	0.35	0.5	Below the limit
48	0.61	0.5	Above the limit
49	unknown	0.5	Reported without a count
50	unknown	0.5	Reported without a count
51	unknown	0.5	Not reported
52	unknown	0.5	Not reported

20240 of 23 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	0.28	0.5	Below the limit
2	0.33	0.5	Below the limit
3	unknown	0.5	Reported without a count
4	0.35	0.5	Below the limit
5	unknown	0.5	Reported without a count
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	0.00	0.5	Below the limit
34	0.00	0.5	Below the limit
35	0.00	0.5	Below the limit
36	0.08	0.5	Below the limit
37	0.13	0.5	Below the limit
38	0.20	0.5	Below the limit
39	0.31	0.5	Below the limit
40	0.34	0.5	Below the limit
41	0.26	0.5	Below the limit
42	0.27	0.5	Below the limit
43	0.34	0.5	Below the limit
44	0.28	0.5	Below the limit
45	0.36	0.5	Below the limit
46	0.40	0.5	Near the limit
47	0.31	0.5	Below the limit
48	0.29	0.5	Below the limit
49	0.14	0.5	Below the limit
50	0.15	0.5	Below the limit
51	0.17	0.5	Below the limit
52	0.19	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	0.39	0.5	Below the limit
41	0.48	0.5	Near the limit
42	0.45	0.5	Near the limit
43	0.14	0.5	Below the limit
44	0.38	0.5	Below the limit
45	0.33	0.5	Below the limit
46	0.33	0.5	Below the limit
47	0.48	0.5	Near the limit
48	0.12	0.5	Below the limit
49	0.21	0.5	Below the limit
50	0.20	0.5	Below the limit
51	0.32	0.5	Below the limit
52	0.30	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 44, 2025
Mechanical delousingWhole site
Week 42, 2025
Mechanical delousingWhole site
Week 39, 2025
Mechanical delousingWhole site
Week 36, 2025
Mechanical delousingWhole site

Show all 15

Week 33, 2025
Mechanical delousingWhole site
Week 29, 2025
Mechanical delousing, Thermal delousing4 pens
Week 28, 2025
Mechanical delousing3 pens
Week 21, 2025
Mechanical delousing2 pens
Week 49, 2024
Thermal delousing2 pens
Week 40, 2024
Medicinal feed4 pens · Emamectin benzoat
Week 39, 2024
Medicinal feed4 pens · Emamectin benzoat
Week 38, 2024
Medicinal feed3 pens · Emamectin benzoat
Week 37, 2024
Medicinal feed3 pens · Emamectin benzoat
Week 48, 2023
Mechanical delousingWhole site
Week 43, 2023
Mechanical delousingWhole site

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

1 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
11 Aug 2026	Viknatrans	Klampvika N	1 h 51 min
24 Nov 2025	Ronja Explorer	Marøya	2 h 5 min
23 Nov 2025	Ronja Explorer	Marøya	2 h 10 min
14 Oct 2025	Ronja Naeroeysund	Marøya	1 h 49 min
20 Sep 2025	Ronja Ocean	Sør Gåsvær	1 h 48 min
06 Sep 2025	Ronja Explorer	Marøya	2 h 4 min
05 Sep 2025	Ronja Explorer	Klampvika N	1 h 38 min
20 Aug 2025	Ronja Ocean	Marøya	2 h 33 min
18 Jul 2025	Faeroeysund	Skauholmen	8 h 39 min
14 Jul 2025	Steinar Olaisen	Hestholmen N	3 h 20 min
11 Jul 2025	Steinar Olaisen	Buktodden Nø	9 h 25 min
22 Apr 2025	Oddoey	Slønga	15 h 48 min

Show 8 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
22 Feb 2025	Oddoey	Kvitskjæret	7 h 42 min
07 Dec 2024	Ro Arctic	Holmen	6 h 58 min
07 Sep 2024	Viknatrans	Kattholmen	4 h 47 min
05 Sep 2024	Viknatrans	Kattholmen	9 h 7 min
12 Aug 2024	Viknatrans	Sør Gåsvær	2 h 22 min
11 Aug 2024	Viknatrans	Sør Gåsvær	1 h 6 min
14 Feb 2024	Ronja Naeroeysund	Helligholmen	4 h 17 min
12 Feb 2024	Ronja Explorer	Marøya	6 h 14 min

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

Licences

Site MAB: 3,120 tonnes

Licence	Type	Capacity	Holder
N BL 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Sinkaberg Havbruk AS
N BL 0007	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Sinkaberg Havbruk AS
N G 0063	Kommersiell / matfiskSalmon, Rainbow trout, Trout	538 t	Organic Seafarm AS
N G 0064	Kommersiell / matfiskSalmon, Rainbow trout, Trout	538 t	Organic Seafarm AS
N HR 0017	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Kobbvåglaks AS
N HR 0070	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Kobbvåglaks AS
N HR 0075	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,000 t	Kobbvåglaks AS
N L 0069	Kommersiell / matfiskSalmon, Rainbow trout, Trout	780 t	Organic Seafarm AS

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