The clearest ocean waters on Earth, look-like mirror

Not much is more alluring when it comes to travel than the prospect of slithering into a crystal-clear ocean. And while sadly so much of world's waters suffer the effects of junk and pollution, there do remain places which remain unscathed. Travel has compiled some of the most breathtaking examples of H2O found from every corner of the globe.

New Zealand's Putaruru Blue Spring, where water takes up to 100 years to filter through the ground and thus emerges among the purest on earth - as of this year, the council has banned swimming in it but you can still observe it from above.

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