Are there jellyfish at Saint-Jean-de-Monts today?

Rare jellyfish have been reported at Saint-Jean-de-Monts. 3 report(s) in the last 7 days. Last updated: 14/07/2026 07:15.

What jellyfish species are found at Saint-Jean-de-Monts?

Recently observed species at Saint-Jean-de-Monts include: Rhizostoma octopus, Velella Velella. Visit the page for more details.

Rare jellyfish have been reported at Saint-Jean-de-Monts. Swimming is possible with caution. Check Meduseo for details.

Rare jellyfish 21.4°C 0.05 m/s

Last updated : 13/07/2026 09:00

Date	Density	Species	Comments
13/07 09:00	very little	Rhizostoma octopus	unknown
12/07 18:15	none		Plage de l'Estacade
09/07 12:03	few	Velella Velella	Plage des Demoiselles Observation : Des petites méduses transparentes, d’environ 3 à 4 cm de diamètre,