Portuguese man-of-war, venomous jellyfish-like creatures, are increasingly washing ashore on European beaches this summer, earning them the nickname “floating terror.” Traditionally found in tropical waters, these animals are expanding their range due to rising sea temperatures in the Atlantic North and Mediterranean Sea. The increase in sightings poses a threat to swimmers, as their long tentacles deliver a painful sting. Experts attribute this shift to climate change and warming ocean currents. Beach closures are becoming more frequent as a result, impacting tourism. Authorities are advising caution and urging beachgoers to report any sightings.