Meduseo is a free jellyfish forecast service. It provides real-time jellyfish presence on beaches using a model combining social media data and community reports. Available in France, Spain, Italy, Australia and many other countries.

Is Meduseo data reliable?

Yes. Data was compared with dated and localized press articles. For example, the massive jellyfish presence in La Ciotat (Nov 2019) and Saint-Tropez (Mar 2020) was correctly detected by Meduseo, sometimes even before the media. The score ranges from 0 (absence) to 100 (massive presence).

Are there jellyfish on beaches today?

Jellyfish have been recently reported on some locations: Nice, Calais, Sitia, Bormes-les-Mimosas, La Ciotat. Check the Meduseo map for the situation at your beach.

How can I report jellyfish presence?

You can report jellyfish presence directly on the Meduseo website or via the mobile app (Android and iPhone). Each report improves the quality of information for all swimmers.

Meduseo - Jellyfish map

Latest reports

Date	Location	Density	Species
29/10 19:52	Nice 🏖 Plage Ste Hélène	very little	Pelagia Noctiluca
29/10 16:50	Calais 🏖 Calais Beach	few	Aurelia Aurita
29/10 16:30	Sitia 🏖 GPS	very little	Other
29/10 16:30	Bormes-les-Mimosas 🏖 Plage du Gaou	a lot	Pelagia Noctiluca
29/10 15:44	La Ciotat 🏖 Fontsainte Beach	none
29/10 15:20	Pianottoli-Caldarello 🏖 St Jean (Plage de San Giovanni)	none
29/10 15:02	el Campello 🏖 Platja de l'Horta-Mutxavista	none
29/10 14:31	Nerja 🏖 Playa El Playazo	very little
29/10 14:02	Palermo 🏖 Mondello	few	Pelagia Noctiluca
29/10 13:39	Toulon 🏖 Plages du Mourillon	none