Swarm of mayflies along River Danube in Hungary
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E-mail Xinhua, August 25, 2013
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| Swarming mayflies are seen along River Danube in Tahitotfalu, some 30 km north from Budapest, Hungary, on Aug. 24, 2013. The improvement of the water quality helped the mayfly species return to River Danube in recent years after four decades of absence. Unlike the more commonly known long-tailed mayfly species on River Tisza, these insects swarm on River Danube at night. (Xinhua/Attila Volgyi) |
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