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: Erdeven, Plouharnel, La Baule-Escoublac, Oropesa del Mar, Concarneau. 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
03/05 23:49	Erdeven 🏖 GPS	few	Cyanea lamarckii
03/05 23:47	Plouharnel 🏖 unknown	few	Aurelia Aurita
03/05 19:27	La Baule-Escoublac	few	Chrysaora hysoscella
03/05 19:02	Oropesa del Mar 🏖 Platja de la Conxa	a lot	Pelagia Noctiluca
03/05 18:04	Concarneau 🏖 Plage de Kernous	few
03/05 17:53	Nice 🏖 Plage Castel	none
03/05 17:16	L'Île-Rousse 🏖 Plage Caruccchetu	none
03/05 16:22	Saint-Jean-de-Monts 🏖 unknown	few	Aurelia Aurita
03/05 16:00	Beaulieu-sur-Mer 🏖 Plage Petite Afrique	none
03/05 15:38	Oropesa del Mar 🏖 Platja de la Conxa	a lot	Pelagia Noctiluca