Aquaculture Welfare

Aquaculture Sea Cage Environmental Welfare

Sea cage aquaculture environmental conditions including currents, fouling, and light affect fish welfare and require appropriate site selection and management.

Key Facts

Strong currents in well-flushed sites maintain water quality and exercise fish naturally
Biofouling of cage nets reduces water flow and oxygen availability for fish
Artificial lighting in winter salmon farming can affect melatonin and reproductive hormones
Site rotation allows environmental recovery and reduces disease buildup
Some sites are chronically suboptimal and should not be used for fish welfare reasons

Welfare Considerations

Sea cage site selection and management affects fish welfare through water quality, disease pressure, and environmental conditions. Welfare-conscious aquaculture requires site assessment that prioritizes fish welfare alongside production efficiency.

What You Can Do

Support aquaculture certification requiring site environmental assessment
Advocate for welfare-based site suitability criteria in aquaculture regulations
Choose certified salmon from farms with demonstrated site management protocols