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Scorpion Reef

Is this a tiny creature on a microscope slide? No, but you are close. This is an image of a structure built by a multitude of small creatures. At about 21 kilometers (13 miles) wide, this feature is the largest coral structure in the southern Gulf of Mexico. The Arrecife Alacranes—or Scorpion Reef—supports wide biological diversity and is home to several endangered species.