Dyrholmen V

Site 32157 · Fitjar municipality · Production area 3, Karmøy til Sotra

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

0.34Adult 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 38 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

9Wellboat visits in 2026by 4 different vessels · latest 09 Sep 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	0.30	0.5	Below the limit
2	0.17	0.5	Below the limit
3	0.18	0.5	Below the limit
4	0.22	0.5	Below the limit
5	0.16	0.5	Below the limit
6	0.20	0.5	Below the limit
7	0.22	0.5	Below the limit
8	0.08	0.5	Below the limit
9	0.16	0.5	Below the limit
10	0.20	0.5	Below the limit
11	0.17	0.5	Below the limit
12	0.18	0.5	Below the limit
13	0.22	0.5	Below the limit
14	0.15	0.5	Below the limit
15	0.13	0.5	Below the limit
16	0.12	0.2	Below the limit
17	0.10	0.2	Below the limit
18	0.10	0.2	Below the limit
19	0.11	0.2	Below the limit
20	0.13	0.2	Below the limit
21	0.09	0.2	Below the limit
22	0.09	0.5	Below the limit
23	0.11	0.5	Below the limit
24	0.15	0.5	Below the limit
25	0.17	0.5	Below the limit
26	0.18	0.5	Below the limit
27	0.20	0.5	Below the limit
28	unknown	0.5	Not reported
29	0.28	0.5	Below the limit
30	0.27	0.5	Below the limit
31	0.23	0.5	Below the limit
32	0.30	0.5	Below the limit
33	0.30	0.5	Below the limit
34	0.28	0.5	Below the limit
35	0.26	0.5	Below the limit
36	0.27	0.5	Below the limit
37	0.30	0.5	Below the limit
38	0.32	0.5	Below the limit
39	0.34	0.5	Below the limit

Earlier years

20254 of 41 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	0.00	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	0.15	0.5	Below the limit
6	0.20	0.5	Below the limit
7	0.25	0.5	Below the limit
8	0.30	0.5	Below the limit
9	0.25	0.5	Below the limit
10	0.35	0.5	Below the limit
11	0.30	0.5	Below the limit
12	0.30	0.5	Below the limit
13	0.25	0.5	Below the limit
14	0.30	0.5	Below the limit
15	0.35	0.5	Below the limit
16	0.40	0.2	Above 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	0.00	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.00	0.5	Below the limit
31	0.05	0.5	Below the limit
32	0.08	0.5	Below the limit
33	0.05	0.5	Below the limit
34	0.13	0.5	Below the limit
35	0.20	0.5	Below the limit
36	0.23	0.5	Below the limit
37	0.25	0.5	Below the limit
38	0.27	0.5	Below the limit
39	0.30	0.5	Below the limit
40	0.40	0.5	Near the limit
41	0.80	0.5	Above the limit
42	0.09	0.5	Below the limit
43	0.35	0.5	Below the limit
44	0.68	0.5	Above the limit
45	1.88	0.5	Above the limit
46	0.12	0.5	Below the limit
47	0.17	0.5	Below the limit
48	0.17	0.5	Below the limit
49	0.20	0.5	Below the limit
50	0.28	0.5	Below the limit
51	0.25	0.5	Below the limit
52	0.30	0.5	Below the limit

20241 of 51 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	0.23	0.5	Below the limit
2	0.02	0.5	Below the limit
3	0.00	0.5	Below the limit
4	0.02	0.5	Below the limit
5	0.00	0.5	Below the limit
6	0.08	0.5	Below the limit
7	0.05	0.5	Below the limit
8	0.05	0.5	Below the limit
9	0.07	0.5	Below the limit
10	0.10	0.5	Below the limit
11	0.10	0.5	Below the limit
12	0.12	0.5	Below the limit
13	0.20	0.5	Below the limit
14	0.31	0.5	Below the limit
15	0.22	0.5	Below the limit
16	0.18	0.2	Near the limit
17	0.08	0.2	Below the limit
18	0.16	0.2	Below the limit
19	0.18	0.2	Near the limit
20	0.19	0.2	Near the limit
21	0.17	0.2	Near the limit
22	0.19	0.5	Below the limit
23	0.34	0.5	Below the limit
24	0.23	0.5	Below the limit
25	0.25	0.5	Below the limit
26	0.24	0.5	Below the limit
27	0.32	0.5	Below the limit
28	0.35	0.5	Below the limit
29	0.28	0.5	Below the limit
30	0.18	0.5	Below the limit
31	0.27	0.5	Below the limit
32	0.30	0.5	Below the limit
33	0.20	0.5	Below the limit
34	0.37	0.5	Below the limit
35	0.55	0.5	Above the limit
36	0.45	0.5	Near the limit
37	0.37	0.5	Below the limit
38	0.35	0.5	Below the limit
39	unknown	0.5	Not reported
40	0.35	0.5	Below the limit
41	0.45	0.5	Near the limit
42	0.05	0.5	Below the limit
43	0.47	0.5	Near the limit
44	0.35	0.5	Below the limit
45	0.40	0.5	Near the limit
46	0.35	0.5	Below the limit
47	0.35	0.5	Below the limit
48	0.40	0.5	Near the limit
49	0.35	0.5	Below the limit
50	0.45	0.5	Near the limit
51	0.00	0.5	Below the limit
52	0.00	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	0.05	0.5	Below the limit
41	0.08	0.5	Below the limit
42	0.07	0.5	Below the limit
43	0.08	0.5	Below the limit
44	0.10	0.5	Below the limit
45	0.30	0.5	Below the limit
46	0.02	0.5	Below the limit
47	0.03	0.5	Below the limit
48	0.05	0.5	Below the limit
49	0.13	0.5	Below the limit
50	0.08	0.5	Below the limit
51	0.08	0.5	Below the limit
52	0.10	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 46, 2025
Thermal delousingWhole site
Week 42, 2025
Thermal delousingWhole site
Week 51, 2024
Thermal delousingWhole site
Week 42, 2024
Thermal delousingWhole site

Show all 8

Week 37, 2024
Thermal delousing2 pens
Week 24, 2024
Thermal delousing2 pens
Week 2, 2024
Thermal delousingWhole site
Week 46, 2023
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

9 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 Sep 2026	Rostein	Kastevika	1 h 33 min
31 Aug 2026	Rohav	Nappeholmane	3 h 49 min
11 Aug 2026	Rostein	Kastevika	1 h 14 min
28 Jul 2026	Rostein	Hundvika Aust	3 h 42 min
14 Jul 2026	Robas	Storevik	1 h 11 min
10 Jun 2026	Robas	Kjeholmen II	1 h 3 min
26 May 2026	Rostein	Skaganeset	2 h 1 min
11 Mar 2026	Langsund	Måren	59 min
08 Jan 2026	Langsund	Sørevik	3 h 7 min
13 Nov 2025	Horda Pioneer	Syrtangen	1 h 21 min
12 Nov 2025	Horda Pioneer	Syrtangen	9 h 21 min
16 Oct 2025	Horda Pioneer	Gardskråneset	11 h 16 min

Show 15 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
15 Oct 2025	Horda Pioneer	Gardskråneset	8 h 2 min
09 Jul 2025	Ro Master	Setevika	7 h 17 min
18 Dec 2024	Hordagut	Skipperdalsneset	8 h 4 min
19 Oct 2024	Horda Pioneer	Øklandsvågen	9 h 41 min
11 Sep 2024	Hordagut	Sagen 2	7 h 6 min
04 Sep 2024	Rostein	Instefjord	1 h 1 min
30 Aug 2024	Robris	Skaganeset	1 h 51 min
17 Aug 2024	Robris	Hesteneset	1 h 9 min
17 Jul 2024	Rohav	Hesteneset	55 min
11 Jul 2024	Rostein	Instefjord	4 h 27 min
04 Jul 2024	Rohav	Hesteneset	2 h 30 min
13 Jun 2024	Hordagut	Soløy Ø	8 h 7 min
25 Mar 2024	Ro Arctic	Instefjord	42 min
12 Jan 2024	Horda Pioneer	Rongøyna III	7 h 21 min
11 Jan 2024	Horda Pioneer	Rongøyna III	10 h 11 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
Engesund Fiskeoppdrett AS	Week 40, 2023	Week 39, 2026
Telavåg Fiskeoppdrett AS	Week 21, 2024	Week 31, 2024
Fylkesnes Fisk AS	Week 32, 2024	Week 38, 2024
Langøylaks AS	Week 33, 2024	Week 34, 2024

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

Licences

Site MAB: 1,560 tonnes

Licence	Type	Capacity	Holder
H AV 0023	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Langøylaks AS
H AV 0025	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Troland Lakseoppdrett AS
H AV 0029	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Langøylaks AS
H FJ 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Fylkesnes Fisk AS
H FJ 0023	Visning / matfiskSalmon, Rainbow trout, Trout	780 t	Engesund Fiskeoppdrett AS
H FJ 0026	Kommersiell / matfisk-grønn cSalmon, Rainbow trout, Trout	737 t	Engesund Fiskeoppdrett AS
H FJ 0901	Kommersiell / alger til fôr/konsumButare	unknown	Engesund Fiskeoppdrett AS
H FJ 0902	Kommersiell / alger til fôr/konsumFingertare	unknown	Engesund Fiskeoppdrett AS
H FJ 0903	Kommersiell / alger til fôr/konsumSukkertare (oppdrett)	unknown	Engesund Fiskeoppdrett AS
H FJ 0904	Kommersiell / alger til fôr/konsumSøl	unknown	Engesund Fiskeoppdrett AS
H FJ 0905	Kommersiell / alger til fôr/konsumStortare	unknown	Engesund Fiskeoppdrett AS
H FJ 0906	Kommersiell / alger til fôr/konsumHavsalat	unknown	Engesund Fiskeoppdrett AS
H S 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	689 t	Telavåg Fiskeoppdrett AS

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