Growing evidence of crustacean sentience is driving regulatory changes in how lobsters and crabs are treated.
The scientific evidence for crustacean sentience has strengthened considerably in recent years. Crabs, lobsters, and shrimp show behavioral and physiological responses to damaging stimuli that parallel those of vertebrates — avoidance learning, protective behaviors, and physiological stress responses. While their nervous systems differ significantly from vertebrates, the precautionary case for treating them as potentially sentient is now being reflected in law in multiple jurisdictions. Humane killing methods including electrical stunning are available and effective.