(NEWSER) – A female shark paid her male roommate the ultimate insult Thursday in a South Korean aquarium: She ate the guy. And when the aquarium reopened Friday, only his tail was sticking out of her mouth.

It's unclear why the seven-foot-long sand tiger shark slowly ate the smaller male at Seoul's COEX aquarium, but aquarium PR manager Oh Tae-youp suggests territorial issues. "Sharks have their own territory," he tells Reuters. "However, sometimes when they bump against each other, they bite out of astonishment."

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