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The spectacular world of salamanders

By: Anna Norris on Aug. 2, 2013, 4:43 p.m.
Lesser siren

Photo: Zeke Franco/Flickr

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Believe it or not, these strange-looking creatures are also considered salamanders. With just two limbs and frilled gills, these expert swimmers are entirely aquatic. Sirens are only found in the Southeastern United States and northern Mexico.