From this vantage point high over the Indian Ocean, we have a spectacular view of the "underwater waterfall" formed off the coast of Mauritius. Not a true waterfall, this is an optical illusion—it"s really the trails of sand and silt deposits on the seafloor being washed by currents over the edge of an ocean shelf. But we"re probably not alone in thinking at first glance that the ocean is pouring into some massive unseen drainpipe.
Getting to the bottom of the underwater waterfall
Today in History
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A circular celebration
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National Park Week: Guadalupe Mountains National Park
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In praise of bogs, swamps, and marshes
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Travel Sunday: Liverpool
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Anybody out there?
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Great Backyard Bird Count
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The Roaches ridge in the Peak District, England
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International Tiger Day
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A narrow passage
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A Flag Day tradition
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Necropolis of Dargavs
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Mount Field National Park, Tasmania, Australia
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Kirkjufell, Iceland
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Polar Bear Week
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Perseid meteor shower over Nevada
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Night of the ‘Cold Moon’
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Mona Vale Rockpool, Sydney, Australia
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