After a few decades, the Danube mayfly (Ephoron virgo) have returned to the river Danube, probably due to the increasing water quality. The fantastic mass swarming of these mayflies is one of the most exciting phenomenon for me. My image was taken in a dark, near-natural bank of Rába river (a tributary of the Danube) with long exposure, flash and flashlight. Unfortunately, the lamp-lit bridges have negative influence to them, because they are attracted to the lamps, become exhausted, lay their eggs to the asphalt roads of the bridge and perish immediately. The team of the Danube Research Institute in cooperation with the Environmental Optics Laboratory plan to solve this biooptical and environmental problem. This image is very precious to me as I can draw the attention to these spectacular water insects and their complex ecological light trap, which endanger their survival.
Rába river, Hungary.
Nikon D90, Sigma 17-70 mm, f/2.8-4.5
1.3 sec, f/14, ISO 800, 17 mm.