Danube Delta Underwater - Romania

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Pool Frog (Pelophylax lessonae) in a shallow lake in the aquatic komplex Somova-Parches, close to Somova village, upper Danube Delta, Romania. It is very similar in appearance to the closely related edible frog and pool frog. These three species, in the genus Pelophylax, are often referred to as "green frogs".