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Shark Awareness Day
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Gdańsk on the banks of the Motława river, Poland
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Small but mighty
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What are these ancient animals?
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Summer Olympics begin in Paris
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Cave Dale and Peveril Castle, England
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Amphitheatre of El Jem, Tunisia
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Shark Fin Cove, California
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On the open ocean road
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Paddle power
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Gravity-defying wonders of the world
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Wind-powered ice racing
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Centuries of time in a Delicate Arch
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International Literacy Day
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Ayutthaya Historical Park, Thailand
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World Theatre Day
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Monfragüe National Park, Cáceres, Extremadura, Spain
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The Big Apple with a foggy topping
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St. Paul Winter Carnival
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Unbe-leaf-able
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West Indian manatees, Crystal River
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Vasco da Gama Bridge, Lisbon, Portugal
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Were halfway there
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Jeju Island, South Korea
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A glowing square of squares
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Earth Day
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Martimoaapa Mire Reserve, Finland
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Alpine Lakes Wilderness, Washington, United States
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Big Bend National Park, Texas, United States
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What waterborne wizardry is this?