Kåholmen

Site 12348 · Hitra municipality · Production area 6, Nordmøre og Sør-Trøndelag

Below the lice limit, week 39Operated by Mowi Seawater Norway AS · group Mowi

0.00Adult 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 16 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 active · 2 earlierRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

3Wellboat visits in 2026by 1 vessel · latest 30 Aug 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

2Escapes reported100-1000 salmon, October 2025Since 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	0.03	0.5	Below the limit
5	0.03	0.5	Below the limit
6	0.02	0.5	Below the limit
7	0.02	0.5	Below the limit
8	0.03	0.5	Below the limit
9	0.02	0.5	Below the limit
10	0.01	0.5	Below the limit
11	0.00	0.5	Below the limit
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	0.00	0.5	Below the limit
36	0.00	0.5	Below the limit
37	0.00	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.00	0.5	Below the limit

Earlier years

20256 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	0.00	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	0.03	0.5	Below the limit
8	0.03	0.5	Below the limit
9	0.03	0.5	Below the limit
10	0.01	0.5	Below the limit
11	0.03	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	0.13	0.2	Below the limit
17	0.16	0.2	Below the limit
18	0.10	0.2	Below the limit
19	0.19	0.2	Near the limit
20	0.14	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	0.04	0.5	Below the limit
25	0.02	0.5	Below the limit
26	0.39	0.5	Below the limit
27	0.13	0.5	Below the limit
28	0.15	0.5	Below the limit
29	0.32	0.5	Below the limit
30	0.46	0.5	Near the limit
31	0.33	0.5	Below the limit
32	0.49	0.5	Near the limit
33	0.26	0.5	Below the limit
34	0.44	0.5	Near the limit
35	0.96	0.5	Above the limit
36	2.34	0.5	Above the limit
37	1.08	0.5	Above the limit
38	0.34	0.5	Below the limit
39	0.24	0.5	Below the limit
40	0.46	0.5	Near the limit
41	1.14	0.5	Above the limit
42	0.97	0.5	Above the limit
43	1.50	0.5	Above the limit
44	0.07	0.5	Below the limit
45	0.18	0.5	Below the limit
46	0.39	0.5	Below the limit
47	0.07	0.5	Below the limit
48	0.06	0.5	Below the limit
49	0.22	0.5	Below the limit
50	0.34	0.5	Below the limit
51	0.06	0.5	Below the limit
52	0.06	0.5	Below the limit

20240 of 19 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	0.00	0.5	Below the limit
35	0.00	0.5	Below the limit
36	0.00	0.5	Below the limit
37	0.00	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.00	0.5	Below the limit
40	0.00	0.5	Below the limit
41	0.00	0.5	Below the limit
42	0.01	0.5	Below the limit
43	0.00	0.5	Below the limit
44	0.01	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.00	0.5	Below the limit
47	0.01	0.5	Below the limit
48	0.00	0.5	Below the limit
49	0.00	0.5	Below the limit
50	0.01	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.00	0.5	Below the limit

20230 of 1 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	0.00	0.5	Below 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

Treatments

Norwegian Food Safety Authority

Week 51, 2025
Mechanical delousingWhole site
Week 47, 2025
Mechanical delousingWhole site
Week 44, 2025
Thermal delousingWhole site
Week 42, 2025
Mechanical delousingWhole site

Show all 17

Week 41, 2025
Mechanical delousing6 pens
Week 40, 2025
Mechanical delousing2 pens
Week 38, 2025
Thermal delousingWhole site
Week 37, 2025
Mechanical delousing4 pens
Week 36, 2025
Mechanical delousing4 pens
Week 35, 2025
Mechanical delousing8 pens
Week 33, 2025
Mechanical delousing7 pens
Week 31, 2025
Mechanical delousing7 pens
Week 27, 2025
Mechanical delousingWhole site
Week 25, 2025
Mechanical delousing1 pen
Week 24, 2025
Mechanical delousing7 pens
Week 23, 2025
Thermal delousing1 pen
Week 20, 2025
Thermal delousing3 pens

Disease

Norwegian Food Safety Authority

15 Aug 2026
Pancreas disease (PD): closedSubtype SAV2 · started 16 Feb 2026 · Norwegian Food Safety Authority
15 Aug 2026
Bacterial kidney disease (BKD): closedstarted 19 Jan 2026 · Norwegian Food Safety Authority

Escapes

Directorate of Fisheries

05 Oct 2025
100-1000 salmon escapedCause: Etter uværet "Amy" ble det oppdaget at toppternen på merd 1 på Kåholmen har slitt seg og havnet under vann med en lengde på ca. 2 meter. Dette er foreløpige observasjoner etter at inspeksjon av anlegget har startet, det totale omfanget av evt. flere skader oppdateres. Oppdatering 5.10. kl. 2030: Inspeksjon/kontroll ila. dagen har avdekt at toppternen har vært under vann på 4, muligens 5 merder, og at det er snakk om flere meter på flere av disse merdene. · Directorate of Fisheries
26 Aug 2025
Escape of salmon, number unknownCause: Avlusingsfartøyet Green Sea Service tok not på propellen da det skulle legge til merden. · recaptured 1 · Directorate of Fisheries

Wellboat visits

3 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
30 Aug 2026	Ronja Evolution	Svellungen	2 h 34 min
29 Aug 2026	Ronja Evolution	Heggvika	2 h 19 min
28 Aug 2026	Ronja Evolution	Heggvika	2 h 39 min
28 Oct 2025	Froy Saga	Tennøya	41 h 35 min
21 Sep 2025	Froy Saga	Heggvika	5 h 28 min
20 Sep 2025	Froy Saga	Heggvika	12 h 9 min
19 Sep 2025	Froy Saga	Heggvika	1 h 34 min
18 Sep 2025	Froy Saga	Heggvika	16 h 29 min
17 Sep 2025	Froy Saga	Heggvika	23 h 14 min
16 Sep 2025	Froy Saga	Heggvika	9 h 55 min
15 Sep 2025	Froy Saga	Heggvika	31 min
16 May 2025	Freyja	Varden	2 h 12 min

Show 4 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
07 Nov 2024	Froy Jarl	Tranøya N	12 h 49 min
06 Nov 2024	Froy Jarl	Tranøya N	10 h 26 min
16 Aug 2024	Ronja Evolution	Fosså	3 h 14 min
15 Aug 2024	Ronja Evolution	Fosså	2 h 54 min

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

Licences

Site MAB: 3,900 tonnes

Licence	Type	Capacity	Holder
ST H 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	2,626 t	Mowi Seawater Norway AS
ST H 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
ST H 0014	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
ST H 0020	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS

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