Herøy

Site 11920 · Vindafjord municipality · Production area 2, Ryfylke

Below the lice limit, week 39Operated by Mowi Seawater Norway AS

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

2Lice treatments in 2026Latest: Mechanical delousing, week 3, 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

7Wellboat visits in 2026by 3 different vessels · latest 09 Mar 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
Week	Adult female lice per fish	Lice limit	Status
1	0.44	0.5	Near the limit
2	0.32	0.5	Below the limit
3	0.08	0.5	Below the limit
4	0.16	0.5	Below the limit
5	0.33	0.5	Below the limit
6	0.39	0.5	Below the limit
7	0.49	0.5	Near the limit
8	unknown	0.5	Reported without a count
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	0.2	Not reported
17	unknown	0.2	Not reported
18	unknown	0.2	Not reported
19	unknown	0.2	Not reported
20	unknown	0.2	Not reported
21	unknown	0.2	Not reported
22	unknown	0.5	Not reported
23	unknown	0.5	Not reported
24	unknown	0.5	Not reported
25	unknown	0.5	Not reported
26	unknown	0.5	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	0.00	0.5	Below the limit

Earlier years

20256 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, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.05	0.5	Below the limit
2	0.15	0.5	Below the limit
3	0.26	0.5	Below the limit
4	0.35	0.5	Below the limit
5	0.30	0.5	Below the limit
6	0.41	0.5	Near the limit
7	0.23	0.5	Below the limit
8	0.33	0.5	Below the limit
9	0.41	0.5	Near the limit
10	0.47	0.5	Near the limit
11	0.45	0.5	Near the limit
12	0.48	0.5	Near the limit
13	0.42	0.5	Near the limit
14	0.22	0.5	Below the limit
15	0.18	0.5	Below the limit
16	0.25	0.2	Above the limit
17	0.18	0.2	Near the limit
18	0.18	0.2	Near the limit
19	0.24	0.2	Above the limit
20	0.19	0.2	Near the limit
21	0.23	0.2	Above the limit
22	0.03	0.5	Below the limit
23	0.47	0.5	Near the limit
24	0.75	0.5	Above the limit
25	0.20	0.5	Below the limit
26	0.37	0.5	Below the limit
27	0.48	0.5	Near the limit
28	0.41	0.5	Near the limit
29	1.10	0.5	Above the limit
30	1.18	0.5	Above the limit
31	0.48	0.5	Near the limit
32	0.38	0.5	Below the limit
33	0.30	0.5	Below the limit
34	0.39	0.5	Below the limit
35	0.10	0.5	Below the limit
36	0.19	0.5	Below the limit
37	0.29	0.5	Below the limit
38	0.49	0.5	Near the limit
39	0.39	0.5	Below the limit
40	0.21	0.5	Below the limit
41	0.46	0.5	Near the limit
42	0.43	0.5	Near the limit
43	0.13	0.5	Below the limit
44	0.29	0.5	Below the limit
45	0.41	0.5	Near the limit
46	0.24	0.5	Below the limit
47	0.40	0.5	Near the limit
48	0.28	0.5	Below the limit
49	0.09	0.5	Below the limit
50	0.08	0.5	Below the limit
51	0.24	0.5	Below the limit
52	0.36	0.5	Below the limit

20240 of 14 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	0.2	Not reported
17	unknown	0.2	Not reported
18	unknown	0.2	Not reported
19	unknown	0.2	Not reported
20	unknown	0.2	Not reported
21	unknown	0.2	Not reported
22	unknown	0.5	Not reported
23	unknown	0.5	Not reported
24	unknown	0.5	Not reported
25	unknown	0.5	Not reported
26	unknown	0.5	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	0.00	0.5	Below the limit
40	0.00	0.5	Below the limit
41	0.00	0.5	Below the limit
42	0.00	0.5	Below the limit
43	0.00	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.02	0.5	Below the limit
46	0.01	0.5	Below the limit
47	0.03	0.5	Below the limit
48	0.06	0.5	Below the limit
49	0.02	0.5	Below the limit
50	0.05	0.5	Below the limit
51	0.06	0.5	Below the limit
52	0.03	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 3, 2026
Mechanical delousing3 pens
Week 2, 2026
Mechanical delousing2 pens
Week 49, 2025
Mechanical delousingWhole site
Week 46, 2025
Mechanical delousingWhole site

Show all 16

Week 43, 2025
Mechanical delousingWhole site
Week 40, 2025
Mechanical delousing2 pens
Week 39, 2025
Mechanical delousing3 pens
Week 35, 2025
Mechanical delousing2 pens
Week 31, 2025
Mechanical delousing1 pen
Week 30, 2025
Thermal delousing1 pen
Week 28, 2025
Mechanical delousing3 pens
Week 25, 2025
Mechanical delousing5 pens
Week 22, 2025
Mechanical delousing2 pens
Week 21, 2025
Mechanical delousing1 pen
Week 20, 2025
Medicinal bath, Mechanical delousing3 pens · Azamethiphos
Week 13, 2025
Medicinal bath5 pens · Azamethiphos

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

7 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 Mar 2026	Ronja Maloy	Åkre	3 h 47 min
09 Mar 2026	Tauranga	Tendalsvik	11 h 27 min
08 Mar 2026	Ronja Merdoe	Tendalsvik	7 h 12 min
06 Mar 2026	Tauranga	Tendalsvik	33 min
01 Mar 2026	Tauranga	Tendalsvik	10 h 39 min
24 Feb 2026	Ronja Merdoe	Tendalsvik	7 h 28 min
03 Feb 2026	Ronja Merdoe	Lindvik	6 h 30 min
27 Sep 2025	Ronja Mistral	Rogne	15 h 35 min
16 Aug 2025	Ronja Maloy	Lindvik	2 h 49 min
14 Aug 2025	Ronja Maloy	Lindvik	2 h 52 min
14 Aug 2025	Ronja Maloy	Lindvik	2 h 51 min
13 Aug 2025	Ronja Maloy	Lindvik	3 h 40 min

Show 28 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
12 Aug 2025	Ronja Maloy	Lindvik	3 h 33 min
11 Aug 2025	Tauranga	Halsavika	5 h 50 min
06 Aug 2025	Ronja Merdoe	Halsavika	4 h 38 min
04 Aug 2025	Tauranga	Bastli	6 h 44 min
03 Aug 2025	Ronja Merdoe	Halsavika	6 h 55 min
03 Aug 2025	Norwegian Gannet	Nordeimsøyna	11 h 32 min
31 Jul 2025	Ronja Merdoe	Halsavika	7 h 0 min
29 Jul 2025	Ronja Merdoe	Halsavika	8 h 32 min
25 Jul 2025	Ronja Maloy	Kjeahola	12 h 55 min
24 Jul 2025	Ronja Maloy	Kjeahola	8 h 24 min
23 Jul 2025	Tauranga	Syltøy	8 h 18 min
22 Jul 2025	Ronja Merdoe	Syltøy	7 h 40 min
19 Jun 2025	Ronja Merdoe	Kjeahola	6 h 18 min
18 Jun 2025	Tauranga	Kjeahola	13 h 44 min
27 May 2025	Ronja Maloy	Munkholmen	15 h 5 min
25 May 2025	Ronja Maloy	Munkholmen	32 h 58 min
25 May 2025	Ronja Maloy	Munkholmen	1 h 24 min
27 Mar 2025	Ronja Boroy	Fosså	41 min
26 Mar 2025	Ronja Boroy	Fosså	2 h 11 min
26 Mar 2025	Ronja Boroy	Fosså	7 h 33 min
25 Mar 2025	Ronja Boroy	Fosså	9 h 37 min
24 Mar 2025	Ronja Boroy	Fosså	6 h 0 min
24 Mar 2025	Ronja Boroy	Fosså	6 h 9 min
23 Mar 2025	Ronja Boroy	Fosså	8 h 15 min
01 Oct 2024	Ronja Evolution	Leite	1 h 26 min
30 Sep 2024	Ronja Evolution	Leite	3 h 46 min
29 Sep 2024	Ronja Mistral	Bryggelandsholmane	1 h 27 min
24 Sep 2024	Ronja Mistral	Smedholmen	52 min

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

Licences

Site MAB: 3,600 tonnes

Licence	Type	Capacity	Holder
R F 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	846 t	Finnøy Fisk AS
R F 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R F 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R F 0030	Kommersiell / matfiskSalmon, Rainbow trout, Trout	845 t	Finnøy Fisk AS
R HM 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R HM 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R HM 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R HM 0008	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R ST 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R TV 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R TV 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R V 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
R V 0011	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS

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