Gergő Kártyás (Hungary) reveals a single insect alongside the lights on the nearby bridge. Gergő had been so impressed by the annual mass swarming of mayflies over Hungary’s River Rába that he’d ...
It is Hungary's annual "Tisza blooming" - millions of mayflies mating on the Tisza River. Reuters Adult mayflies emerge from their underwater life, mate and then die in the space of a few hours.
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