The main aim of the experiment was to deliver a shock just under the threshold that causes crabs to move out of the shell , to see what happened when a new shell was then offered . New research from Queen 's University says crabs feel and remember pain . Study carried out on the crabs in shells that were given mild electric shocks . Author of book says crustaceans should be treated with same care as vertebrates .
New research from Queen 's University says crabs feel and remember pain . Study carried out on the crabs in shells that were given mild electric shocks . Author of book says crustaceans should be treated with same care as vertebrates .