Jellyfish in France: how to check sightings online before swimming

Reports have increased on parts of the Mediterranean and Atlantic coasts

The mauve stinger (Pelagia noctiluca), is known for its painful sting
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Numerous jellyfish have been reported on beaches along several coastlines in recent days, with sightings in both Provence-Alpes-Côte d’Azur and parts of the Atlantic coast. 

According to recent reports on jellyfish monitoring apps, several beaches are currently showing a high number of sightings, with the higher number gathered in beaches of western France including Châtelaillon-Plage and La Couarde-sur-Mer. Meanwhile, Fouras, La Tranche-sur-Mer, Saint-Brevin-les-Pins and Arradon are also reported to have several.

On the Mediterranean coast, jellyfish have also been reported on beaches in the Hérault, Var and Alpes-Maritimes departments, including areas near Nice, Antibes, Saint-Jean-Cap-Ferrat and Sainte-Maxime. The highest number of sightings has reportedly been recorded at Balaruc-les-Bains in Hérault.

The species most commonly reported is the mauve stinger (Pelagia noctiluca), a small purple jellyfish with long tentacles that can cause painful stings. 

However, the situation can change quickly, as jellyfish are moved by currents, meaning a beach without sightings one day may report the next. 

How to check for jellyfish before swimming 

The most important thing to do is check up-to-date jellyfish maps for recent sightings. One of these sites is Meduseo, which provides an interactive map of their movements and presence. 

Additionally, you can ask lifeguards about local conditions, look for signs or warnings on beaches and stay within supervised swimming areas. 

In France, no beach is considered completely free of jellyfish as sightings depend on changing sea conditions. 

What to do if you are stung 

Most jellyfish stings in France, although painful, are not life-threatening. If stung you should

  • Leave the water carefully

  • Do not rub the affected area

  • Remove any remaining tentacles with an object rather than with bare hands

  • Rinse the area with seawater, not fresh water

  • Ask lifeguards for assistance if available

Urine should not be used on jellyfish stings, as this common remedy is not effective and may increase irritation. 

Finally, it is advised to seek medical advice in case of a severe reaction, multiple stings or stings affecting the face.