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These are the longest rivers of the world and surpass the expectations of all.

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The Galapagos Islands have their own indigenous wildlife and many of these creatures can be found nowhere else on earth. Giant tortoises, huge rats, rare penguins and specialized species of finches make this a unique and finely balanced environment.

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A giraffe’s tongue is blue to protect it from sunburn and the chameleon moves its tongue faster that the human eye can follow it. Here are some of the most interesting tongues around.