Gråvika

Site 11657 · Gulen municipality · Production area 4, Nordhordland til Stadt

Status unknown: not reported in week 39Operated by Blom Fiskeoppdrett AS · group unknown

unknownAdult female lice per fishNo count in week 39. Latest: 0.37 in week 6, 2026Week 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

1Lice treatments in 2026Latest: Thermal 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

5Wellboat visits in 2026by 2 different vessels · latest 15 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 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	0.32	0.5	Below the limit
2	0.32	0.5	Below the limit
3	0.10	0.5	Below the limit
4	0.00	0.5	Below the limit
5	0.10	0.5	Below the limit
6	0.37	0.5	Below the limit
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	unknown	0.5	Not reported

Earlier years

20251 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	0.03	0.5	Below the limit
2	0.19	0.5	Below the limit
3	0.15	0.5	Below the limit
4	0.18	0.5	Below the limit
5	0.24	0.5	Below the limit
6	0.20	0.5	Below the limit
7	0.24	0.5	Below the limit
8	0.45	0.5	Near the limit
9	0.00	0.5	Below the limit
10	0.00	0.5	Below the limit
11	0.01	0.5	Below the limit
12	0.03	0.5	Below the limit
13	0.06	0.5	Below the limit
14	0.01	0.5	Below the limit
15	0.05	0.5	Below the limit
16	0.16	0.2	Below the limit
17	0.00	0.2	Below the limit
18	0.00	0.2	Below the limit
19	0.04	0.2	Below the limit
20	0.01	0.2	Below the limit
21	0.05	0.2	Below the limit
22	0.09	0.5	Below the limit
23	0.13	0.5	Below the limit
24	0.40	0.5	Near the limit
25	0.00	0.5	Below the limit
26	0.00	0.5	Below the limit
27	0.06	0.5	Below the limit
28	0.13	0.5	Below the limit
29	0.06	0.5	Below the limit
30	0.32	0.5	Below the limit
31	0.07	0.5	Below the limit
32	0.07	0.5	Below the limit
33	0.46	0.5	Near the limit
34	0.49	0.5	Near the limit
35	0.10	0.5	Below the limit
36	0.11	0.5	Below the limit
37	0.61	0.5	Above the limit
38	0.44	0.5	Near the limit
39	0.43	0.5	Near the limit
40	0.16	0.5	Below the limit
41	0.39	0.5	Below the limit
42	0.34	0.5	Below the limit
43	0.14	0.5	Below the limit
44	0.08	0.5	Below the limit
45	0.05	0.5	Below the limit
46	0.05	0.5	Below the limit
47	0.23	0.5	Below the limit
48	0.43	0.5	Near the limit
49	0.48	0.5	Near the limit
50	0.18	0.5	Below the limit
51	0.28	0.5	Below the limit
52	0.20	0.5	Below the limit

20240 of 9 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	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	0.00	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.00	0.5	Below the limit
47	0.00	0.5	Below the limit
48	0.07	0.5	Below the limit
49	0.06	0.5	Below the limit
50	0.06	0.5	Below the limit
51	0.09	0.5	Below the limit
52	0.15	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 3, 2026
Thermal delousing4 pens
Week 49, 2025
Thermal delousingWhole site
Week 43, 2025
Thermal delousingWhole site
Week 40, 2025
Thermal delousingWhole site

Show all 8

Week 35, 2025
Thermal delousingWhole site
Week 31, 2025
Thermal delousingWhole site
Week 25, 2025
Thermal delousingWhole site
Week 17, 2025
Thermal 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

5 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 Jan 2026	Horda Pioneer	Dalsvåg NV	3 h 53 min
15 Jan 2026	Hordagut	Uføro disease or zone there	15 h 30 min
14 Jan 2026	Horda Pioneer	Dalsvåg NV	19 h 3 min
14 Jan 2026	Hordagut	Uføro disease or zone there	9 h 42 min
14 Jan 2026	Hordagut	Uføro disease or zone there	47 min
07 Dec 2025	Hordagut	Gardskråneset	22 h 40 min
06 Dec 2025	Hordagut	Gardskråneset	9 h 35 min
05 Dec 2025	Hordagut	Gardskråneset	19 h 48 min
20 Oct 2025	Hordagut	Uføro disease or zone there	39 h 42 min
01 Oct 2025	Horda Pioneer	Aga Ø	5 h 23 min
29 Sep 2025	Hordagut	Torangskjeret disease or zone there	53 h 12 min
30 Aug 2025	Hordagut	Vadholmen	1 h 47 min

Show 17 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
30 Aug 2025	Horda Pioneer	Sagen 2	1 h 44 min
29 Aug 2025	Hordagut	Vadholmen	19 h 17 min
29 Aug 2025	Horda Pioneer	Sagen 2	19 h 36 min
28 Aug 2025	Horda Pioneer	Sagen 2	2 h 19 min
29 Jul 2025	Hordagut	Langevågen	15 h 18 min
28 Jul 2025	Hordagut	Langevågen	9 h 54 min
26 Jul 2025	Firda Savior	Nesevågen	8 h 59 min
26 Jul 2025	Hordagut	Langevågen	32 h 13 min
20 Jun 2025	Hordagut	Kalsøyflu disease or zone there	8 h 42 min
19 Jun 2025	Hordagut	Kalsøyflu disease or zone there	16 h 39 min
19 Jun 2025	Hordagut	Kalsøyflu disease or zone there	54 min
25 Apr 2025	Hordagut	Langevågen	12 h 42 min
24 Apr 2025	Hordagut	Langevågen	8 h 50 min
27 Feb 2025	Hordagut	Buarøy	12 h 3 min
26 Feb 2025	Hordagut	Buarøy	6 h 3 min
30 Dec 2024	Hordagut	Klungsholmen	5 h 59 min
07 Nov 2024	Mowi Star	Kalsøyflu	4 h 53 min

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

Licences

Site MAB: 3,500 tonnes

Licence	Type	Capacity	Holder
H FJ 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Engesund Fiskeoppdrett AS
H L 0019	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H ML 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H R 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H R 0008	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H R 0011	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H ØN 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
H ØN 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Blom Fiskeoppdrett AS
SF A 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Landøy Havbruk AS
SF A 0026	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Landøy Havbruk AS
SF A 0030	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF A 0031	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF A 0032	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Landøy Havbruk AS
SF G 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0009	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Firda Havbruk AS
SF G 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0011	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0022	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF G 0038	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF H 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF H 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF H 0008	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Erko Seafood AS
SF N 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS
SF SU 0023	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Erko Seafood AS
VL G 0006	Undervisning / matfiskSalmon, Rainbow trout, Trout	780 t	Vestland Fylkeskommune

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