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In the Caspian Sea in Azerbaijan, there are over 300 "mini mud volcanoes". This incredible geological phenomenon, often pushes mud out. But the last eruption in 2001 next to Azerbaijan's capital Baku, this mud layer has a height of 50 feet (more than 15m).
Starfish, Maldives
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Watch the starfish on Vaadhoo Island, Maldives. This place seems to be the mirror of the stars. This is actually a bioluminescence phenomenon of domestic organisms. At night, these plankton make the coast look like a shimmering starry sky, like the scene in a fairy tale. You can also experience such magical beauty on the island of Vieques in Puerto Rico.