Costa Brava resorts in Spain experience a surge in jellyfish due to rising sea temperatures.

Costa Brava resorts in Spain face a surge in jellyfish due to rising sea temperatures, driving species northwards. A 41% increase in sightings was reported this year, with most jellyfish being harmless. However, two Tarragona beaches were closed in July due to venomous Portuguese man o' war presence. The increase is attributed to climate change, human-made structures, and limited data on other Mediterranean regions.