Aquaculture

Farmed Sea Bass Welfare

European sea bass is a major farmed species in Mediterranean aquaculture. Key welfare challenges include stocking density, handling, and slaughter practices.

Key Facts

European sea bass production exceeds 200,000 tonnes annually, primarily in Turkey, Greece, and Egypt
Sea bass are sensitive to crowding stress, showing elevated cortisol and immune suppression at high densities
Spawning season handling causes significant mortality in broodstock management
Live transport to processing facilities is common and stressful
Carbon dioxide or ice slurry without prior stunning are widely used slaughter methods with welfare concerns

Welfare Considerations

Farmed sea bass experience welfare challenges throughout the production cycle including crowding, handling, transport, and slaughter. High-density rearing suppresses immune function and increases disease susceptibility. Slaughter without pre-stunning via CO2 or ice causes slow death associated with aversive responses. The industry has lagged behind salmon farming in welfare standard development, though increasing retailer requirements are beginning to drive improvements.

What You Can Do

Choose sea bass certified by welfare-assessed schemes where available
Ask retailers about welfare standards in their Mediterranean aquaculture supply chains
Reduce sea bass consumption or substitute with lower-impact certified seafood
Support research into improved stocking density and slaughter welfare for sea bass
Advocate for welfare standards in aquaculture regulation to extend beyond salmon