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U.S. Postal Commemorative, Jefferson National Expansion Memorial
St. Louis, Missouri
The Florida Keys, a chain of islands approximately 220 miles long, curve south and west of mainland Florida. Stretching along beside them, about 6 miles seaward, is a long barrier reef. Coral reefs are actually of tiny animals called coral polyps.
Wonders of America: Land of Superlatives Stamp Series@2005 United States Postal Service. All rights reserved. Used with Permission.
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Image courtesy of Jim Roberts, GVCC