Swedish researchers have found conclusive evidence that crabs feel pain, challenging the notion that their responses to discomfort are simply reflex actions. Using EEG-style measurements, they detected pain stimuli being sent to the brains of shore crabs during various stimulations. This research has implications for the treatment of other decapod crustaceans, such as lobsters, which are currently not covered by EU animal welfare legislation and are often boiled alive.

This study adds scientific weight to arguments for the protection of crustaceans and other animals, but further testing raises ethical concerns about causing pain and discomfort to creatures in the name of research. Despite some countries recognizing animal sentience, including crustaceans as sentient beings, there is still widespread cruelty and neglect in the farming industry. Many animal advocates argue that the most ethical route is to abstain from consuming all animals, including crustaceans, as there may be no truly humane way to treat and kill them.