Humans can't breathe underwater, but this pool is different. It allows anyone who goes into it do just that. What kind of magical trickery is this?

It is actually an art installation by Argentinian artist Leandro Erlich.

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The pool is actually fake. There's no water in it.

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When you look down at it from the deck, it appears to be real. Except, it is a layer of water that's just 10 centimeters deep.

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The rest of it is empty space. You can pretend you're underwater in it.