Abalone are large marine snails farmed as a luxury seafood in several countries. Their welfare needs, while poorly studied, are beginning to receive attention as production scales.
Abalone welfare sits in the uncertain zone of invertebrate sentience where precautionary consideration is warranted. As mollusks with distributed nervous systems, they lack a centralized brain but show behavioral responses to potentially harmful stimuli. Water quality is the most critical welfare factor — abalone require highly oxygenated, temperature-appropriate water, and any compromise causes behavioral changes consistent with distress. Stocking density management affects both welfare (crowding reduces feeding behavior and increases injury) and production outcomes. Slaughter by direct high-temperature exposure causes behavioral responses that may indicate suffering — rapid chilling may be more humane. The luxury market for abalone creates economic capacity for welfare investment that producers in premium markets should apply.