We're not sure what the need was, but we're pretty sure the crabs didn't like this experiment.
The Queen's University Belfast shocked a group of crabs to see if they experienced pain. As one (with common sense) would expect, the crabs wanted to avoid the shocks.
The researchers did cause pain to the crabs, but the university hopes this will alert the food industry on how live crustaceans are treated.
Crabs get the raw end of the deal in the food industry, whether they are boiled alive our housed in bright and loud areas.
Maybe this experiment will help seafood enthusiasts rethink their attitudes on crustaceans.