Istria jellyfish surge causes concern for tourists

An unusual increase in the population of jellyfish, colloquially known as “fried egg” jellyfish due to their appearance, has been reported in the waters around the Istrian peninsula, particularly near Pula, Rovinj, and Poreč. Experts from the University of Pula and the Pula Aquarium note that densities have reached approximately two adult individuals per square meter in some areas.

Despite causing concern among tourists, specialists emphasize that this native Mediterranean species is harmless to humans. Their stinging cells are too weak to penetrate human skin, typically resulting in nothing more than a mild tingling sensation or no reaction at all, though individuals with extreme sensitivities or allergies should exercise caution.

The jellyfish derive their brownish-green color from a symbiosis with algae living within their tissues. While wind and currents have pushed these creatures closer to the shore, experts state that such mass gatherings are part of their natural life cycle. They also play a vital role in the ecosystem, as young fish often use the bells of adult jellyfish for shelter. Authorities advise the public not to touch or remove the animals from the sea.