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What if humans had gills and could breathe underwater just like fish?

Just how cool would it be to swim alongside dolphins and sea turtles for as long as you want. Would breathing underwater mean we could finally explore all of Earth’s waters? Would we give up this terrestrial life and move to the bottom of the sea?Maybe we’d see how polluted our oceans are and clean them up?

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About What If:
An INSH original web series, presented by Hashem al Ghaili

What If asks some of the most provocative hypothetical questions in science — and then tries to answer them with the help of established scientific theory and the latest research.

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