Compare the supply chains behind seafood
Why this can help
Research comparing aquatic foods finds that farmed bivalves and some small pelagic fish can have lower climate impacts than many crustacean supply chains. Species and production method matter.
One possible next step
Ask which species and production method are offered, then compare suitable options for the same meal.
What changes the outcome
Climate impact alone does not cover overfishing, habitat damage or bycatch. Check the actual fishery or farm and local management; a mussel or fish is not automatically a sustainable choice.
The action
One possibility
Choosing seafood from a high-impact supply chain
Another possibility
Choosing a verified lower-impact alternative
Research comparing aquatic foods finds that farmed bivalves and some small pelagic fish can have lower climate impacts than many crustacean supply chains. Species and production method matter.
Ask which species and production method are offered, then compare suitable options for the same meal.
Sources and calculation references
- Gephart et al., Nature (2021) — Environmental performance of blue foodsJessica A. Gephart et al. · 2021
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