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Penguins clad in Christmas-themed outfits walk next to staff dressed as Santa Claus at Hakkeijima Sea Paradise in Yokohama, south of Tokyo November 27, 2012 (Credit: Reuters/Yuriko Nakao)

Penguins clad in Christmas-themed outfits walk next to staff dressed as Santa Claus at Hakkeijima Sea Paradise in Yokohama, south of Tokyo November 27, 2012 (Credit: Reuters/Yuriko Nakao)