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Portuguese Man o' War Sting Alert on Europe's Shores
11 Aug
Summary
- Portuguese man o' war sightings prompt warnings on French and Spanish coasts.
- A sting can cause painful skin burns; tentacles remain hazardous when dead.
- Specific first aid involves seawater and vinegar, avoiding fresh water.
Beachgoers on Europe's Atlantic coast are being cautioned due to a rise in sightings of the Portuguese man o' war, a creature known for its potent sting. Coastal areas in France's Pyrénées-Atlantiques department and along Spain's Cantabrian coast have issued alerts. San Sebastian is employing a flag system, with red flags prohibiting swimming when the creatures are present on beaches like Ondarreta.
Often mistaken for a jellyfish, the Portuguese man o' war is biologically a colonial hydrozoan composed of specialized zooids. Its distinctive appearance includes a translucent purple float and long, blueish-violet tentacles. These tentacles pose the greatest risk, as they can deliver a painful sting long after the animal has died.
Authorities advise immediate first aid for stings, emphasizing rinsing with seawater or a seawater-vinegar mixture, while strictly avoiding fresh water. Rubbing or scratching the affected area is also discouraged. In regions like Nouvelle-Aquitaine in France, lifeguards are equipped to handle such incidents, with informational posters displayed at beach entrances.
The frequency of these venomous marine animals has been notably higher in recent years along France's Aquitaine coastline, prompting ongoing vigilance and safety measures for the public.
