Gulholmen

Site 24735 · Bjørnafjorden municipality · Production area 3, Karmøy til Sotra

Below the lice limit, week 39Operated by Lerøy Vest Sjø AS · group Lerøy Seafood Group

0.20Adult 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 22 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

3Lice treatments in 2026Latest: Thermal delousing, week 37, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Active disease casesNone active · 1 earlierRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

8Wellboat visits in 2026by 2 different vessels · latest 05 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 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

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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	0.2	Not reported
17	0.00	0.2	Below the limit
18	0.00	0.2	Below the limit
19	0.00	0.2	Below the limit
20	0.00	0.2	Below the limit
21	0.00	0.2	Below the limit
22	0.00	0.5	Below the limit
23	0.00	0.5	Below the limit
24	0.08	0.5	Below the limit
25	0.48	0.5	Near the limit
26	0.03	0.5	Below the limit
27	unknown	0.5	Reported without a count
28	0.03	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.27	0.5	Below the limit
31	0.32	0.5	Below the limit
32	0.08	0.5	Below the limit
33	0.07	0.5	Below the limit
34	0.18	0.5	Below the limit
35	0.40	0.5	Near the limit
36	0.48	0.5	Near the limit
37	0.28	0.5	Below the limit
38	0.08	0.5	Below the limit
39	0.20	0.5	Below the limit

Earlier years

20255 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, 2025
Week	Adult female lice per fish	Lice limit	Status
1	unknown	0.5	Reported without a count
2	unknown	0.5	Reported without a count
3	0.00	0.5	Below the limit
4	0.03	0.5	Below the limit
5	0.00	0.5	Below the limit
6	0.00	0.5	Below the limit
7	0.01	0.5	Below the limit
8	0.01	0.5	Below the limit
9	0.02	0.5	Below the limit
10	0.05	0.5	Below the limit
11	0.12	0.5	Below the limit
12	0.20	0.5	Below the limit
13	0.31	0.5	Below the limit
14	0.04	0.5	Below the limit
15	0.04	0.5	Below the limit
16	0.04	0.2	Below the limit
17	0.05	0.2	Below the limit
18	0.06	0.2	Below the limit
19	0.11	0.2	Below the limit
20	0.14	0.2	Below the limit
21	0.18	0.2	Near the limit
22	0.30	0.5	Below the limit
23	0.53	0.5	Above the limit
24	0.38	0.5	Below the limit
25	0.25	0.5	Below the limit
26	0.38	0.5	Below the limit
27	0.19	0.5	Below the limit
28	0.35	0.5	Below the limit
29	0.44	0.5	Near the limit
30	0.48	0.5	Near the limit
31	0.17	0.5	Below the limit
32	0.86	0.5	Above the limit
33	0.51	0.5	Above the limit
34	0.33	0.5	Below the limit
35	0.16	0.5	Below the limit
36	0.28	0.5	Below the limit
37	0.34	0.5	Below the limit
38	0.36	0.5	Below the limit
39	0.63	0.5	Above the limit
40	0.79	0.5	Above the limit
41	unknown	0.5	Not reported
42	unknown	0.5	Not reported
43	unknown	0.5	Not reported
44	unknown	0.5	Not reported
45	unknown	0.5	Not reported
46	unknown	0.5	Not reported
47	unknown	0.5	Not reported
48	unknown	0.5	Not reported
49	unknown	0.5	Not reported
50	unknown	0.5	Not reported
51	unknown	0.5	Not reported
52	unknown	0.5	Not reported

20240 of 22 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	0.11	0.5	Below the limit
2	0.14	0.5	Below the limit
3	0.09	0.5	Below the limit
4	0.03	0.5	Below the limit
5	0.03	0.5	Below the limit
6	0.04	0.5	Below the limit
7	0.06	0.5	Below the limit
8	0.10	0.5	Below the limit
9	0.19	0.5	Below the limit
10	0.29	0.5	Below the limit
11	0.08	0.5	Below the limit
12	0.04	0.5	Below the limit
13	0.00	0.5	Below the limit
14	0.01	0.5	Below the limit
15	0.01	0.5	Below the limit
16	0.07	0.2	Below the limit
17	0.01	0.2	Below the limit
18	0.01	0.2	Below the limit
19	0.01	0.2	Below the limit
20	0.02	0.2	Below the limit
21	0.05	0.2	Below the limit
22	0.16	0.5	Below the limit
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	unknown	0.5	Not reported
40	unknown	0.5	Not reported
41	unknown	0.5	Not reported
42	unknown	0.5	Not reported
43	unknown	0.5	Not reported
44	unknown	0.5	Not reported
45	unknown	0.5	Not reported
46	unknown	0.5	Not reported
47	unknown	0.5	Not reported
48	unknown	0.5	Not reported
49	unknown	0.5	Not reported
50	unknown	0.5	Not reported
51	unknown	0.5	Not reported
52	unknown	0.5	Not reported

20230 of 14 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
30	0.21	0.5	Below the limit
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
40	0.05	0.5	Below the limit
41	0.04	0.5	Below the limit
42	0.10	0.5	Below the limit
43	0.05	0.5	Below the limit
44	0.30	0.5	Below the limit
45	0.34	0.5	Below the limit
46	0.36	0.5	Below the limit
47	0.34	0.5	Below the limit
48	0.49	0.5	Near the limit
49	0.45	0.5	Near the limit
50	0.08	0.5	Below the limit
51	0.08	0.5	Below the limit
52	0.06	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 37, 2026
Thermal delousing2 pens
Week 32, 2026
Thermal delousing3 pens
Week 26, 2026
Freshwater treatmentWhole site
Week 34, 2025
Freshwater treatment, Thermal delousing4 pens

Show all 17

Week 31, 2025
Thermal delousing, Freshwater treatment4 pens
Week 30, 2025
Freshwater treatment, Thermal delousing2 pens
Week 27, 2025
Thermal delousing, Freshwater treatment2 pens
Week 25, 2025
Thermal delousing, Freshwater treatment2 pens
Week 24, 2025
Freshwater treatment, Thermal delousing4 pens
Week 14, 2025
Freshwater treatment, Thermal delousingWhole site
Week 11, 2024
Thermal delousing, Freshwater treatment6 pens
Week 10, 2024
Thermal delousing, Freshwater treatment2 pens
Week 50, 2023
Other treatment1 pen · Kombi - FV og Thermisk
Week 49, 2023
Other treatment3 pens · Kombi - FV og Thermisk
Week 46, 2023
Other treatment2 pens · Skamik
Week 40, 2023
Other treatmentWhole site · Kombi - FV og Thermisk
Week 30, 2023
Medicinal bathWhole site · Azamethiphos

Disease

Norwegian Food Safety Authority

30 Mar 2026
Pancreas disease (PD): closedSubtype SAV3 · started 26 May 2025 · Norwegian Food Safety Authority

Escapes

Directorate of Fisheries

No escapes reported from this site since 2006.

Wellboat visits

8 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
05 Aug 2026	Seihav	Djupevika	41 h 53 min
28 Jun 2026	Seihav	Haugsnesvåg	15 h 16 min
26 Jun 2026	Seihav	Haugsnesvåg	32 h 47 min
23 Apr 2026	Seifjell	Midtflua	3 h 0 min
22 Apr 2026	Seifjell	Midtflua	3 h 2 min
21 Apr 2026	Seifjell	Midtflua	1 h 37 min
21 Apr 2026	Seifjell	Midtflua	1 h 5 min
21 Apr 2026	Seifjell	Midtflua	3 h 36 min
26 Sep 2025	Tonny	Buarøy	1 h 0 min
19 Sep 2025	Seigrunn	Sagen 2	15 h 21 min
18 Sep 2025	Seigrunn	Sagen 2	3 h 40 min
25 Aug 2025	Seigrunn	Sagen 2	15 h 51 min

Show 34 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
23 Aug 2025	Seigrunn	Sagen 2	23 h 53 min
29 Jul 2025	Seihav	Sagen 2	11 h 51 min
29 Jul 2025	Seigrunn	Flatøyflu disease or zone there	18 h 31 min
28 Jul 2025	Seihav	Sagen 2	7 h 48 min
28 Jul 2025	Seigrunn	Flatøyflu disease or zone there	8 h 30 min
28 Jul 2025	Seigrunn	Flatøyflu disease or zone there	3 h 21 min
27 Jul 2025	Seigrunn	Flatøyflu disease or zone there	1 h 4 min
27 Jul 2025	Seigrunn	Flatøyflu disease or zone there	2 h 16 min
26 Jul 2025	Horda Pioneer	Gardskråneset	3 h 3 min
26 Jul 2025	Seigrunn	Flatøyflu disease or zone there	7 h 10 min
04 Jul 2025	Seigrunn	Raunevågen	14 h 27 min
21 Jun 2025	Seihav	Kyrholmen S disease or zone there	6 h 44 min
21 Jun 2025	Seigrunn	Sagen 2	12 h 46 min
21 Jun 2025	Seihav	Kyrholmen S disease or zone there	3 h 5 min
15 Jun 2025	Seigrunn	no other farm	13 h 31 min
14 Jun 2025	Seigrunn	no other farm	1 h 29 min
06 Jan 2025	Seifjell	no other farm	1 h 35 min
05 Jan 2025	Rostein	Instefjord	1 h 4 min
05 Jan 2025	Seifjell	no other farm	6 h 15 min
04 Jan 2025	Rostein	Instefjord	1 h 10 min
04 Jan 2025	Seifjell	no other farm	5 h 0 min
03 Jan 2025	Rostein	Instefjord	1 h 41 min
03 Jan 2025	Seifjell	no other farm	8 h 10 min
03 Jan 2025	Seifjell	no other farm	1 h 20 min
02 Jan 2025	Rostein	Instefjord	3 h 48 min
08 Dec 2024	Seigrunn	no other farm	1 h 1 min
13 Mar 2024	Seihav	Rongøy	10 h 30 min
12 Mar 2024	Seihav	Rongøy	16 h 37 min
12 Mar 2024	Hordagut	Sagen 2	30 h 9 min
11 Mar 2024	Seihav	Rongøy	41 min
11 Mar 2024	Seihav	Rongøy	10 h 5 min
11 Mar 2024	Hordagut	Sagen 2	18 h 36 min
10 Mar 2024	Hordagut	Sagen 2	12 h 9 min
10 Mar 2024	Seihav	Rongøy	14 h 37 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
H AV 0020	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Lerøy Vest Sjø AS
H AV 0024	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Lerøy Vest Sjø AS
H O 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Lerøy Vest Sjø AS
H O 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Lerøy Vest Sjø AS

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