Langøya

Site 45081 · Herøy i Nordland municipality · Production area 8, Helgeland til Bodø

Below the lice limit, week 39Operated by Seløy Sjøfarm AS · group unknown

0.09Adult female lice per fishLimit 0.50 · below the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

1Weeks above the limit in 2026of 13 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

6Wellboat visits in 2026by 3 different vessels · latest 24 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 21–26 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	0.10	0.5	Below the limit
2	0.05	0.5	Below the limit
3	0.02	0.5	Below the limit
4	0.05	0.5	Below the limit
5	0.25	0.5	Below the limit
6	0.50	0.5	Above 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	0.5	Not reported
17	unknown	0.5	Not reported
18	unknown	0.5	Not reported
19	unknown	0.5	Not reported
20	unknown	0.5	Not reported
21	unknown	0.2	Not reported
22	unknown	0.2	Not reported
23	unknown	0.2	Not reported
24	unknown	0.2	Not reported
25	unknown	0.2	Not reported
26	unknown	0.2	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	0.00	0.5	Below the limit
34	0.00	0.5	Below the limit
35	0.00	0.5	Below the limit
36	0.00	0.5	Below the limit
37	0.05	0.5	Below the limit
38	0.01	0.5	Below the limit
39	0.09	0.5	Below the limit

Earlier years

20255 of 35 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

Show as table

Adult female lice per fish per week, 2025
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	0.5	Not reported
17	unknown	0.5	Not reported
18	0.02	0.5	Below the limit
19	0.16	0.5	Below the limit
20	0.12	0.5	Below the limit
21	0.11	0.2	Below the limit
22	0.08	0.2	Below the limit
23	0.10	0.2	Below the limit
24	0.09	0.2	Below the limit
25	0.14	0.2	Below the limit
26	0.14	0.2	Below the limit
27	0.36	0.5	Below the limit
28	0.06	0.5	Below the limit
29	0.29	0.5	Below the limit
30	0.41	0.5	Near the limit
31	0.11	0.5	Below the limit
32	0.13	0.5	Below the limit
33	0.34	0.5	Below the limit
34	0.97	0.5	Above the limit
35	2.01	0.5	Above the limit
36	0.30	0.5	Below the limit
37	0.12	0.5	Below the limit
38	0.44	0.5	Near the limit
39	0.49	0.5	Near the limit
40	0.33	0.5	Below the limit
41	0.64	0.5	Above the limit
42	0.91	0.5	Above the limit
43	0.25	0.5	Below the limit
44	0.88	0.5	Above the limit
45	0.10	0.5	Below the limit
46	0.23	0.5	Below the limit
47	0.29	0.5	Below the limit
48	0.38	0.5	Below the limit
49	0.04	0.5	Below the limit
50	0.09	0.5	Below the limit
51	0.14	0.5	Below the limit
52	0.21	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 49, 2025
Thermal delousing, Freshwater treatment5 pens
Week 45, 2025
Thermal delousing6 pens
Week 43, 2025
Mechanical delousingWhole site
Week 40, 2025
Mechanical delousingWhole site

Show all 11

Week 37, 2025
Mechanical delousingWhole site
Week 36, 2025
Thermal delousingWhole site
Week 31, 2025
Mechanical delousingWhole site
Week 30, 2025
Thermal delousing2 pens
Week 28, 2025
Thermal delousing5 pens
Week 26, 2025
Thermal delousing2 pens
Week 18, 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

6 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
24 Aug 2026	Viknatrans	Tosen	1 h 37 min
12 Aug 2026	Viknatrans	Melkøya	1 h 20 min
17 Feb 2026	Aasvaerfjord	Marøya	1 h 38 min
16 Feb 2026	Aasvaerfjord	Marøya	1 h 48 min
18 Jan 2026	Ronja Explorer	Marøya	2 h 9 min
04 Jan 2026	Ronja Explorer	Marøya	2 h 53 min
03 Dec 2025	Ro Venture	Skonseng	20 h 42 min
01 Dec 2025	Ro Venture	Skonseng	21 h 11 min
14 Sep 2025	Steinar Olaisen	Marøya	16 h 1 min
02 Sep 2025	Ro Venture	Selsøyvær	20 h 23 min
01 Aug 2025	Steinar Olaisen	Skålsvika	15 h 5 min
23 Jul 2025	Ro Venture	Store Bukkøy N	6 h 24 min

Show 4 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
08 Jul 2025	Ro Arctic	Sør Gåsvær	14 h 18 min
25 Jun 2025	Ro Venture	Nord Gåsvær	4 h 26 min
29 Apr 2025	Ro Venture	Sør Gåsvær	4 h 1 min
28 Apr 2025	Ro Venture	Sør Gåsvær	4 h 31 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
N HR 0011	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Seløy Sjøfarm AS
N HR 0019	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Seløy Sjøfarm AS
N HR 0070	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Kobbvåglaks AS
N HR 0075	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,000 t	Kobbvåglaks AS
N HR 0076	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,157 t	Seløy Sjøfarm AS

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