LEARN WHY OCEAN-FARMED, ATLANTIC salmon IS NOT SUSTAINABLE

environment

SEA CAGES ARE DESTRUCTIVE TO LIFE INSIDE AND AROUND THEM.

Ocean farms generate tons of plastic waste1 and dump toxins like pesticides in the water2, contributing to the destruction of entire ecosystems. They’re also a key factor driving wild Atlantic salmon to extinction.3
Garbage
Garbage

80%

decline in wild Atlantic salmon populations since 1970s.4

Sea cages are crowded and often break open. The ocean-farmed escapees interbreed with wild Atlantic salmon, polluting their gene pool and making it harder for the wild species to survive.5

Additionally, chemicals and antibiotics used in sea cages leach into the ocean, harming surrounding wildlife and ecosystems.2,6

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health

SOME OCEAN-FARMED SALMON HEALTH CLAIMS ARE FISHY.

The truth behind ocean-farmed salmon stands in stark contrast to the healthy image often marketed to consumers.

Today, roughly 70% of all salmon sold — and 99% of Atlantic salmon7 — is farmed in overcrowded sea cages, where waste and fecal matter cloud the water. These fish are fed unnatural diets and often promoted with misleading labels like “organic” and “sustainable.”  

Not all labels are created equal. Take “organic,” for example. It may suggest USDA Organic certification.  

But in fact, there is no federally approved organic standard for salmon farming in the United States8, meaning that “organic salmon” on store shelves carries no official guarantee from the USDA, though they may have organic certification in their country of origin, such as Canada or the European Union.  

Contaminant levels in ocean-farmed salmon can also be higher than in wild salmon.

Contaminant levels in farmed salmon can be higher than in wild salmon.

Trace amounts of the pesticides and other chemicals used in sea cages can be found in the flesh of ocean-farmed salmon.9 Some antibiotics used in ocean salmon farming are also important to human medicine, intensifying global concerns about the spread of antibiotic-resistant bacteria.6 The World Health Organization identifies antibiotic resistance as a threat to global health.10

Ocean-farmed salmon can absorb and retain higher levels of harmful pollutants than wild salmon. This is because they are fattier than their wild counterparts, and many toxic chemicals dissolve easily in fat.11 In fact, their nutritional profile includes more than double the amount of saturated fats found in wild salmon.12

There are healthier and cleaner ways to get omega-3s. Good sources include chia and hemp seeds, walnuts, mussels, mackerel, sardines and anchovies.13

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SUSTAINABILITY

INDUSTRY RAISES TONS OF FISH — AND RED FLAGS.

Fishing

It takes tons of smaller fish to feed and fatten up ocean-farmed salmon.14 This contributes to the industry’s large carbon footprint because the giant trawlers needed to haul in those fish require enormous amounts of fuel.  

Coastal communities that rely on tourism and sustainable fishing practices take an economic hit when sea cages are installed nearby.15

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questions? Ask our AI assistant. All sources have been vetted by scientists and wild Atlantic salmon advocates.
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ANIMAL WELFARE

Sick fishes
Image: Patagonia, Artifishal
Attacked fishes
Image: Patagonia, Artifishal

Conditions in sea
cages are inhumane by any measure.

Sea cages are overcrowded with fish that can barely move and breathe, surrounded by toxins, and their own waste.

Each year, millions of farmed salmon die prematurely from viruses and parasitic infections.16

The sea cages also serve as a breeding ground for sea lice17 that swarm the fecal-infested cages and literally eat the salmon alive, despite ongoing treatment with antibiotics and pesticides.

FOOD INSECURITY

tHE AQUACULTURE INDUSTRY DIVERTS PROTEIN FROM LOW-INCOME COUNTRIES.

Fishing trawler at sea hauling a large net filled with fish and seabirds resting on it.
fishing
Fishes

440

estimated number of smaller wild-caught fish required to raise a single ocean-farmed salmon before harvest.18

Giant trawlers off the coast of Africa haul in tons of small fish that are ground into pellets.  90% of these fish, including sardines and mackerel, could serve as a vital source of protein for people in lower-income countries.18

Sources

1  Ali, W., Doyen, P. & Amara, R. 2026. Marine plastic pollution and bioplastic alternatives: a review. Environ Chem Lett 24:611–646. https://doi.org/10.1007/s10311-026-01906-2
2  Bloodworth, J.W. et al. 2019. Negative effects of the sea lice therapeutant emamectin benzoate at low concentrations on benthic communities around Scottish fish farms. Sci. Tot. Environ. 669:91-102. https://www.sciencedirect.com/science/article/pii/S0048969719309428
‍3  Norwegian Scientific Advisory Committee for Atlantic Salmon. 2026. Status of wild Atlantic salmon in Norway 2026. https://vitenskapsradet.no/Portals/vitenskapsradet/Pdf/Status%20of%20wild%20Atlantic%20salmon%20in%20Norway%202026.pdf
4  ICES. 2026. Working Group on North Atlantic Salmon (WGNAS). ICES Scientific Reports. 8:24. 196 pp. https://doi.org/10.17895/ices.pub.32034120
5  Bolstad, G.H., et al. 2021. Introgression from farmed escapees affects the full life cycle of wild Atlantic salmon. Sci. Adv. 7: eabj3397 https://doi.org/10.1126/sciadv.abj3397
6  Camacho-Mendez, K. et al. 2026. Antibiotic use in Chilean salmon aquaculture: antimicrobial resistance, sustainability, and One Health implications. Front. Microbiol. 17:1810226 https://doi.org/10.3389/fmicb.2026.1810226
7 Knapp, G., Roheim, C., & Anderson, J. 2007. The Great Salmon Run: Competition Between Wild and Farmed Salmon. ISER Reports. 409. https://scholarworks.alaska.edu/uaa_iser_reports/409
8  Beg, MM. et al. 2024. Organic Aquaculture Regulation, Production, and Marketing: Current Status, Issues, and Future Prospects—A Systematic Review. Aquaculture Research. 2024(1) https://doi.org/10.1155/2024/5521188
9  Donald, C.E., et al. 2026. Pesticide residues in aquaculture salmon filet and feed: Quantitative and qualitative screening profiles of legacy and current-use pesticides using GC-EI-MS/MS and LC-ESI-IMS-QToF. Journal of Chromatography B. 1269:124864. https://www.sciencedirect.com/science/article/pii/S1570023225004180
10 WHO. 2026. Antimicrobial resistance https://www.who.int/news-room/fact-sheets/detail/antimicrobial-resistance‍
11  Duke Superfund Community Engagement Core. Common Fish Contaminants and Health Impacts. Accessed 2026 Sept 17. https://sites.nicholas.duke.edu/superfundcec/fish/common-fish-contaminants-and-their-health-impacts/
12  US Department of Agriculture. FoodData Central. Accessed 2026 Sept 3. https://fdc.nal.usda.gov/food-search?query=salmon
13  National Institutes of Health. Omega-3 Fatty Acids Fact Sheet for Consumers. Accessed 2026 Sept 17. https://ods.od.nih.gov/factsheets/Omega3FattyAcids-Consumer/‍
14 Majluf, P. et al. 2024. A review of the global use of fishmeal and fish oil and the Fish In:Fish Out metric. Sci Adv. 10(42):eadn5650. https://doi.org/10.1126/sciadv.adn5650
15 Perles-Ribes, J. F., et al. 2023. Aquaculture in tourist destinations: the need to consider economic aspects in environmental impact studies. Current Issues in Tourism, 26(22):3671–3685. https://doi.org/10.1080/13683500.2022.2144158
16 Singh, GG., Sajid, Z., & Mather, C. 2024. Quantitative analysis of mass mortality events in salmon aquaculture shows increasing scale of fish loss events around the world. Sci Rep. 14(1):3763 https://doi.org/10.1038/s41598-024-54033-9
17 Frazer LN. 2009. Sea-cage aquaculture, sea lice, and declines of wild fish. Conserv Biol. 23(3):599-607. https://doi.org/10.1111/j.1523-1739.2008.01128.x
18 Moore, G. 13 Feb 2024. Salmon farmers defend responsible use of wild fish in feed. Fish Farming Expert. https://www.fishfarmingexpert.com/compassion-in-world-farming-feed-salmon/salmon-farmers-defend-responsible-use-of-wild-fish-in-feed/1727087
Excerpt from SUPERFISH: SALMON. Courtesy of Wild Logic, LLC. Used with permission © Wild Logic, LLC. Cinematography by Rick Rosenthal, Veiga Grétarsdóttir and Arnt Mollan. Graphics by Tim Davison.