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Same Species, Polar Opposites: The Mystery of Identical Creatures Found in both Arctic and Antarctic Waters [Slide Show]

Two years ago, several research vessels shipped out to the North and the South poles to assemble a census of creatures living under the ice. One of the most surprising results was a discovery that 235 identical species lived on opposite sides of the world but were undocumented anywhere else. It’s easy to understand how massive humpbacks can swim from Arctic to Antarctic waters, but most of the miniature worms, snails and crustaceans on the researchers’ list are no bigger than grains of rice. How could tiny creatures adapted for the frigid waters travel 9,500 kilometers through warmer climes to reach the opposite pole? [More]




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