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ARNOLD, UK — A mother discovered something fishy when she opened a can of tuna, more fishy than the tuna itself.

Zoe Butler, 28, said that she saw something looking back at her when she opened the the lid of the container.

“I opened the top of the lid and saw a purply thing, a gut sack or intestine – then I turned it round and pushed it with a fork and saw it looking back at me.” Butler told The Nottingham Post “It’s got like a spiny tail along the bottom – it’s quite grim.”

She sent the pictures of the creature to the tuna company, Princes. Her goal isn’t to get anything from Princes, merely to make sure it doesn’t happen again.

An expert says that the creature looks like a juvenile crab.

Princes has launched an investigation into the matter.