Sea cucumbers are farmed in tropical Indo-Pacific regions with growing demand from Asian food markets, with welfare status a scientifically debated question given their simple nervous system.
Sea cucumber welfare exists in a zone of even greater scientific uncertainty than oysters, given the species' highly diffuse nervous system. Current evidence does not support significant pain perception in sea cucumbers, though evisceration during stressful handling demonstrates a physiological stress response. Applying the precautionary principle in contexts of genuine scientific uncertainty about sentience is appropriate, suggesting minimisation of stressful handling practices. The conservation contribution of sea cucumber aquaculture in reducing wild harvest pressure represents a positive ecological welfare outcome regardless of the individual welfare status of farmed animals.