Marine Animals

Antarctic Krill Welfare and Ecosystem Role

Antarctic krill are the foundation of Southern Ocean food webs and are fished intensively, with uncertain welfare implications.

Key Facts

Antarctic krill may be the most abundant animal species by mass on Earth
They are the primary prey of whales, penguins, seals, and many fish
Krill fisheries are expanding as climate change reduces krill habitat
Krill have nociceptors and show avoidance learning suggesting some pain capacity
Climate change is reducing krill population size and distribution

Welfare Considerations

The welfare status of krill is highly uncertain but their ecological importance is beyond question. Overfishing krill amplifies welfare impacts on countless sentient predator species. Precautionary management that protects krill populations serves both ecosystem integrity and the welfare of dependent species. Whether krill themselves experience suffering warrants continued research.

What You Can Do

Avoid products containing Antarctic krill oil unless sourced from certified sustainable fisheries
Support strong krill fishery management regulations
Advocate for expanded Antarctic marine protected areas
Support research on krill sentience and welfare
Engage with climate change as a krill conservation issue