- Country: Hungary
- Genres: Documentary
- Release:
- Director: Gergely Balázs , Balázs Lerner
- Writers: Gergely Balázs , Balázs Lerner
- Language: Hungarian | English
- Stars: N/A
- Runtime: 50 min
- Awards: N/A
- AKA: Operation Mayfly , A dunavirág mentőakció (Hungary)
- Plot:
2016 Ig Nobel prize winner György Kriska and his colleagues decide to prevent a massacre: applying their latest results in hardcore biophysics and a bit of tinkering they do their best to ensure the reproduction of the Danube mayflies, who are trapped and killed by the floodlit bridges over the river.
- IMDB:tt8047488