We've all heard of octopuses, but how about a hexapus?

That's what zookeepers at the Blackpool Sea Life Centre in northern England call their six-legged octopus, who was fished out of the Irish Sea off Wales last month.

Henry the Hexapus, as he's been dubbed, came about his reduced status as a result of a birth defect, not injury as is common among octopuses, squid and their cuttlefish cousins.

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"We've scoured the Internet and talked to lots of other aquariums and no one has ever heard of another case of a six-legged octopus," supervisor Carey Duckhouse told Agence France-Presse.

Henry's unusual configuration wasn't noticed until a few days ago, when the hexagonal mollusk finally attached himself to the glass wall of his tank, astonishing staffers.

He'll be going on display soon as part of a larger octopus exhibit entitled "Suckers," according to the Times of London.

• Click here for the AFP story, and here for the Times of London feature.