Queen Scallop Welfare in Harvesting and Aquaculture

Queen scallops are commercially harvested and experimentally cultured, with welfare considerations focused on the uncertain sentience of bivalves and harvesting methods.

Key Facts

Queen scallops (Aequipecten opercularis) are widely harvested in the North Atlantic
Dredging is the primary harvesting method and causes significant seabed disturbance
Scallop aquaculture using cage or ear-hanging systems is growing in Scotland and Ireland
Queen scallops display rapid swimming escape responses when disturbed — a notable stress indicator
As bivalves, their sentience status is uncertain but precautionary consideration is warranted

Welfare Considerations

Queen scallop welfare considerations centre on two issues: the sentience question common to all bivalves, and the ecological welfare of associated benthic communities affected by dredging. Dredging causes direct physical damage to scallops, crushing injury, and settlement of silt that reduces survival. Dive harvesting and cage aquaculture avoid these impacts. While bivalve sentience remains uncertain, the precautionary principle supports minimising unnecessary physical trauma during harvest.

What You Can Do

Choose dive-caught or cage-cultured scallops where available to reduce habitat damage
Ask seafood suppliers about the harvesting method used for scallop products
Support scientific research into bivalve sentience to improve evidence-based welfare standards
Advocate for dredging restrictions in sensitive seabed habitats where alternatives exist