Hestabyneset

Site 18015 · Tysnes municipality · Production area 3, Karmøy til Sotra

Below the lice limit, week 39Operated by Sjøtroll Havbruk Sjø AS

0.18Adult 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 39 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

6Lice treatments in 2026Latest: Thermal delousing, week 18, 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

10Wellboat visits in 2026by 3 different vessels · latest 01 Sep 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported1-10 salmon, April 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 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	0.00	0.5	Below the limit
2	0.00	0.5	Below the limit
3	0.00	0.5	Below the limit
4	0.02	0.5	Below the limit
5	0.04	0.5	Below the limit
6	0.09	0.5	Below the limit
7	0.11	0.5	Below the limit
8	0.11	0.5	Below the limit
9	0.11	0.5	Below the limit
10	0.14	0.5	Below the limit
11	0.19	0.5	Below the limit
12	0.20	0.5	Below the limit
13	0.23	0.5	Below the limit
14	0.19	0.5	Below the limit
15	0.25	0.5	Below the limit
16	0.09	0.2	Below the limit
17	0.12	0.2	Below the limit
18	0.02	0.2	Below the limit
19	0.02	0.2	Below the limit
20	0.02	0.2	Below the limit
21	0.03	0.2	Below the limit
22	0.03	0.5	Below the limit
23	0.04	0.5	Below the limit
24	0.05	0.5	Below the limit
25	0.08	0.5	Below the limit
26	0.09	0.5	Below the limit
27	0.11	0.5	Below the limit
28	0.12	0.5	Below the limit
29	0.11	0.5	Below the limit
30	0.12	0.5	Below the limit
31	0.12	0.5	Below the limit
32	0.11	0.5	Below the limit
33	0.11	0.5	Below the limit
34	0.14	0.5	Below the limit
35	0.15	0.5	Below the limit
36	0.17	0.5	Below the limit
37	0.19	0.5	Below the limit
38	0.20	0.5	Below the limit
39	0.18	0.5	Below the limit

Earlier years

20250 of 17 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	0.48	0.5	Near the limit
2	0.39	0.5	Below the limit
3	0.46	0.5	Near the limit
4	0.26	0.5	Below the limit
5	0.31	0.5	Below the limit
6	0.31	0.5	Below the limit
7	0.37	0.5	Below the limit
8	0.33	0.5	Below the limit
9	0.32	0.5	Below the limit
10	0.18	0.5	Below the limit
11	0.15	0.5	Below the limit
12	0.18	0.5	Below the limit
13	0.22	0.5	Below the limit
14	0.26	0.5	Below the limit
15	0.19	0.5	Below the limit
16	0.19	0.2	Near the limit
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	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	Reported without a count
52	0.00	0.5	Below the limit

20240 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, 2024
Week	Adult female lice per fish	Lice limit	Status
1	0.00	0.5	Below the limit
2	0.00	0.5	Below the limit
3	0.00	0.5	Below the limit
4	0.00	0.5	Below the limit
5	0.00	0.5	Below the limit
6	0.00	0.5	Below the limit
7	0.00	0.5	Below the limit
8	0.01	0.5	Below the limit
9	0.01	0.5	Below the limit
10	0.01	0.5	Below the limit
11	0.02	0.5	Below the limit
12	0.02	0.5	Below the limit
13	0.02	0.5	Below the limit
14	0.04	0.5	Below the limit
15	0.06	0.5	Below the limit
16	0.05	0.2	Below the limit
17	0.07	0.2	Below the limit
18	0.08	0.2	Below the limit
19	0.09	0.2	Below the limit
20	0.10	0.2	Below the limit
21	0.11	0.2	Below the limit
22	0.11	0.5	Below the limit
23	0.12	0.5	Below the limit
24	0.12	0.5	Below the limit
25	0.12	0.5	Below the limit
26	0.12	0.5	Below the limit
27	0.11	0.5	Below the limit
28	0.11	0.5	Below the limit
29	0.11	0.5	Below the limit
30	0.09	0.5	Below the limit
31	0.11	0.5	Below the limit
32	0.11	0.5	Below the limit
33	0.12	0.5	Below the limit
34	0.18	0.5	Below the limit
35	0.21	0.5	Below the limit
36	0.22	0.5	Below the limit
37	0.31	0.5	Below the limit
38	0.48	0.5	Near the limit
39	0.42	0.5	Near the limit
40	0.31	0.5	Below the limit
41	0.36	0.5	Below the limit
42	0.37	0.5	Below the limit
43	0.42	0.5	Near the limit
44	0.40	0.5	Near the limit
45	0.34	0.5	Below the limit
46	0.40	0.5	Near the limit
47	0.47	0.5	Near the limit
48	0.32	0.5	Below the limit
49	0.33	0.5	Below the limit
50	0.38	0.5	Below the limit
51	0.34	0.5	Below the limit
52	0.42	0.5	Near the limit

20230 of 3 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	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	0.00	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.00	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 18, 2026
Thermal delousing, Freshwater treatment4 pens
Week 16, 2026
Thermal delousing, Freshwater treatment4 pens
Week 15, 2026
Thermal delousing, Freshwater treatment4 pens
Week 4, 2025
Freshwater treatment, Thermal delousing4 pens

Show all 11

Week 3, 2025
Freshwater treatment, Thermal delousing2 pens
Week 48, 2024
Freshwater treatment, Thermal delousing2 pens
Week 47, 2024
Freshwater treatment, Thermal delousing2 pens
Week 45, 2024
Other treatment2 pens · Kombi - FV og Thermisk
Week 44, 2024
Other treatment1 pen · Kombi - FV og Thermisk
Week 40, 2024
Thermal delousing, Freshwater treatment2 pens
Week 39, 2024
Freshwater treatment, Thermal delousing6 pens

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

10 Apr 2026
1-10 salmon escapedrecaptured 1 · Directorate of Fisheries

Wellboat visits

10 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
01 Sep 2026	Seigrunn	Sagen 2	5 h 47 min
27 Apr 2026	Seihav	Sagen 2	20 h 57 min
14 Apr 2026	Seihav	Hisdalen	38 min
13 Apr 2026	Seihav	Hisdalen	11 h 52 min
10 Apr 2026	Seihav	Hisdalen	16 h 57 min
09 Apr 2026	Seihav	Hisdalen	1 h 55 min
05 Jan 2026	Seifjell	Gjengane	1 h 48 min
04 Jan 2026	Seifjell	Gjengane	1 h 45 min
03 Jan 2026	Seifjell	Gjengane	2 h 5 min
02 Jan 2026	Seifjell	Gjengane	1 h 38 min
21 Dec 2025	Seifjell	Tobbeholmane	59 min
20 Dec 2025	Seifjell	Tobbeholmane	1 h 37 min

Show 26 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
19 Dec 2025	Seifjell	Tobbeholmane	1 h 10 min
21 Jan 2025	Seigrunn	Djupevika	19 h 26 min
20 Jan 2025	Seigrunn	Djupevika	13 h 39 min
19 Jan 2025	Seigrunn	Djupevika	4 h 54 min
02 Dec 2024	Seihav	Kyrholmen S	35 min
01 Dec 2024	Seihav	Kyrholmen S	17 h 7 min
30 Nov 2024	Seihav	Kyrholmen S	3 h 31 min
23 Nov 2024	Seihav	Trælsøyosen	6 h 53 min
06 Nov 2024	Seihav	Langøy	31 h 8 min
05 Nov 2024	Seihav	Langøy	9 h 32 min
04 Nov 2024	Seihav	Langøy	3 h 32 min
03 Nov 2024	Seihav	Langøy	11 h 42 min
03 Nov 2024	Seihav	Langøy	1 h 34 min
02 Nov 2024	Seihav	Langøy	36 min
01 Oct 2024	Seihav	Tepstad	18 h 57 min
29 Sep 2024	Seihav	Tepstad	9 h 45 min
28 Sep 2024	Seihav	Tepstad	20 h 44 min
14 Jan 2024	Langsund	Rindarøy	4 h 8 min
14 Jan 2024	Mowi Star	Lyngholmen	7 h 49 min
13 Jan 2024	Langsund	Rindarøy	9 h 19 min
13 Jan 2024	Mowi Star	Lyngholmen	8 h 23 min
12 Jan 2024	Langsund	Rindarøy	46 min
12 Jan 2024	Mowi Star	Lyngholmen	50 min
11 Jan 2024	Mowi Star	Lyngholmen	7 h 2 min
11 Jan 2024	Langsund	Rindarøy	3 h 52 min
11 Jan 2024	Mowi Star	Lyngholmen	3 h 25 min

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

Who has reported

The companies that have submitted lice counts for this site, with the first and last week.

Company	From	To
Sjøtroll Havbruk Sjø AS	Week 50, 2023	Week 52, 2024
Sjøtroll Havbruk Sjø AS	Week 1, 2024	Week 39, 2026

Source: Norwegian Food Safety Authority (organisation number on each lice report)

Licences

Site MAB: 3,120 tonnes

Licence	Type	Capacity	Holder
H AV 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Lerøy Vest Sjø AS
H AV 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Lerøy Vest Sjø AS
H AV 0011	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,378 t	Sjøtroll Havbruk Sjø AS
H AV 0014	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Sjøtroll Havbruk Sjø AS
H AV 0021	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Sjøtroll Havbruk Sjø AS
H AV 0040	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Sjøtroll Havbruk Sjø AS
H K 0036	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Sjøtroll Havbruk Sjø AS
H L 0016	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Sjøtroll Havbruk Sjø AS
H T 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Lerøy Vest Sjø AS
H T 0007	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Sjøtroll Havbruk Sjø AS
H T 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Sjøtroll Havbruk Sjø AS
H T 0015	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Lerøy Vest Sjø AS

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