Welfare considerations in the emerging sea urchin aquaculture industry.
Sea urchin welfare sits at the outer edge of current welfare science, where the evidence for sentience is limited but the precautionary principle still applies given the scale of production and the biological capacity for nociception. The alignment of welfare-positive conditions (appropriate density, water quality, diet) with commercial quality goals means that economic incentives largely support welfare improvements in this sector. The philosophical question of whether sea urchin welfare deserves moral consideration remains genuinely open, but practical welfare standards can be developed around the measurable indicators of health and behavior available.