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: Saint-Georges-de-Didonne, Saint-Jean-Cap-Ferrat, Dunkirk, La Marsa, Folly Beach. 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
04/10 20:44	Saint-Georges-de-Didonne 🏖 Plage de Saint-Georges de Didonne	few	Rhizostoma octopus
04/10 20:43	GPS 🏖 GPS	few	Rhizostoma octopus
04/10 19:30	GPS 🏖 GPS	very little	Rhizostoma octopus
04/10 19:18	Saint-Jean-Cap-Ferrat 🏖 Plage Paloma Beach	few	Aurelia Aurita
04/10 18:15	Dunkirk 🏖 Plage de Malo-les-Bains	a lot
04/10 18:09	Dunkirk 🏖 Plage de Malo-les-Bains	a lot	Catostylus mosaicus
04/10 17:31	La Marsa 🏖 unknown	a lot	Rhizostoma octopus
04/10 16:52	Folly Beach 🏖 unknown	few	Chiropsalmus quadrumanus
04/10 16:43	Villers-sur-Mer 🏖 Plage de Villers-sur-Mer	a lot	Rhizostoma octopus
04/10 16:24	Formentera 🏖 Platja de s'Illeta	very little