Storm washes thousands of dead animals onto Baltic Sea beaches - walkers should keep their distance. Fire jellyfish normally die at low temperatures, but the mild winter encouraged their reproduction.
Warming of the Baltic Sea could be responsible for the death of fire jellyfish. Overfishing of the seas could increase the phenomenon, as the few fish mean more food is available to the animals. Shaving foam or a hard object is recommended to remove the jellyfish's nettles from your skin.