Scientists in New Zealand made an unexpected discovery while they were defrosting a slab of leopard seal poop that had been saved in a freezer for more than a year.

Deep inside the slab of poop, known scientifically as a scat, scientists found a USB memory stick that was in “reasonably good condition considering where it had come from,” the National Institute of Water and Atmospheric Research (NIWA) said on its website.

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The memory stick was left out to dry, and remarkably, when it was plugged into a computer, they found amazing footage of sea lions at Porpoise Bay in the Caitlins and a video of a mother and baby sea lion “frolicking in the shallows.”

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“The only clue to who might have taken them is the nose of a blue kayak,” NIWA said.

The organization said the scat containing the memory stick was collected in November 2017 at Invercargill's Oreti beach.

Volunteer Jodie Warren, who sifted through the scat and found the memory stick, expressed concern for the animal who ingested the USB.

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“It is very worrying that these amazing Antarctic animals have plastic like this inside them,” she said.