They will be judged on their quality, style and originality. Gergő Kártyás (Hungary) reveals a single insect alongside the lights on the nearby bridge. Gergő had been so impressed by the annual mass ...

In reality, the presence of these insects indicates a healthy and clean freshwater body, as mayflies are unable to function ...

Reuters The long-tailed Tisza mayfly is the largest in Europe - 12cm (4.7 in) in length. The longest phase of the insect's life is as a nymph under water - it can be as long as two years.

Today, modern crustaceans breathe through their exoskeleton, but the larvae of mayflies, dragonflies, damselflies, and many ...