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A green frog sits atop a large lily pad in the waters of Atchafalaya Delta. Although this croaker is a bayou-dweller, its species thrives as far north as Canada.
Out of 12,000 entries received, find out who takes home the Grand Prize!
Eighteen percent of the world's population can't get safe drinking water. Test your water knowledge.
When making long exposures, use a remote release to avoid camera movement. If you don't have a remote release, use the camera's self-timer.
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