This is a video of some paper folded and cut with the intention of being unfolded through what is called capillary action. As the water is absorbed by the paper, it is sucked up the capillaries (small tubes) in the sheet. This action is a bit like inflating a balloon which straightens the capillaries, forcing the paper to unfold.
It's a unique idea in the origami world. Gives a new meaning to wet-folding!
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