Aquaculture

Aquaculture Net Pen Welfare: Sea Cage Management

Sea cage aquaculture presents specific welfare challenges around crowding, environmental variation, and disease management in an open marine environment.

Key Facts

Sea cage salmon experience natural tidal and temperature variation that land-based systems cannot replicate
Net integrity failures allowing predator access are a welfare emergency causing mass injury
Optimal stocking densities for sea cage welfare are contested, with industry and science often at odds
Underwater cameras and acoustic sensors enable welfare monitoring in sea cages at increasing resolution

Welfare Considerations

Sea cage aquaculture welfare is determined by stocking density, net integrity, water quality, and disease management. The open sea environment provides some natural welfare benefits but also exposes fish to risks absent in land-based systems. Effective monitoring and management are essential.

What You Can Do

Support aquaculture certification schemes that include sea cage welfare standards
Advocate for real-time welfare monitoring requirements in sea cage aquaculture regulations
Engage with research on optimal sea cage management for salmon welfare