Shrimp are routinely prepared live in both commercial and domestic settings. Scientific evidence on crustacean sentience has important implications for how shrimp should be handled and killed.
The routine practice of preparing shrimp by dropping them live into boiling water causes potentially significant welfare harm if shrimp experience pain. The scientific evidence for nociception in decapod crustaceans has strengthened substantially in recent years. Shrimp show protective behaviour toward injured limbs, avoidance learning after noxious stimuli and physiological stress responses that parallel those seen in vertebrates. Whether these responses involve subjective suffering cannot be definitively established, but the precautionary principle suggests minimising potential suffering through rapid killing methods. The scale of global shrimp consumption makes this a welfare issue affecting billions of individual animals.