Skip to content
Species
First Aid
Explore
Information
🇬🇧
🇫🇷 FR
🇬🇧 EN
🇪🇸 ES
🇮🇹 IT
🇳🇱 NL
Login
View all alerts
Plage de Saint-Sieu,
Lancieux, France
No information
19.7°C
Last updated :
28/09/2026 00:00
Contribute
Worldwide
France
Brittany
Lancieux
Plage de Saint-Sieu
Beach
Plage du Rocher
Plage de l'Islet
Plage de la Cerisaie
Plage du Corps de Garde
Plage de Buglais
Plage des Briantais
Plage du Rieul
Plage de Saint-Sieu
Plage de la Roche Morin
Plage de la Sintelette
Unnamed beach
Plage du Caducet
Unnamed beach
Latest reports
No recent reports
Jellyfish density evolution
7 days
30 days
Report detail
Date
Beach
Comments
GPS
Jellyfish size
Jellyfish color
Water temperature
Certified account
Certified contributor
Photo
Report jellyfish
Beach (if available)
By beach
My position
Point on the map
-- Beach (if available) --
Plage du Rocher
Plage de l'Islet
Plage de la Cerisaie
Plage du Corps de Garde
Plage de Buglais
Plage des Briantais
Plage du Rieul
Plage de Saint-Sieu
Plage de la Roche Morin
Plage de la Sintelette
Unnamed beach
Plage du Caducet
Unnamed beach
My position
Observation position
Date of observation
How many jellyfish did you see?
none
very little
few
a lot
Water temperature
Optional
Optional. Enter a value between 8.0 and 30.0°C with at most one decimal.
Identification
Optional
Help us keep reliable data! If you're not sure about the species, just indicate the size, the color or add a photo.
What did they look like?
Other
Pelagia N.
5 - 10 cm
Aurelia A.
25 - 40 cm
Rhizostoma O.
20 - 90 cm
Physalia P.
10 - 30 cm
Chrysaora H.
15 - 30 cm
Velella V.
4 - 8 cm
Description rapide
Estimated size :
Coin
Hand
Ball / Plate +
Dominant color :
Clear
Pink / Violet
Brown / Yellow
Blue
Take a photo
Choose from gallery
The ultimate proof for identification
By submitting a photo, you agree to our
terms of use
.
Comments
Optional
Create your free account
Track your reports, add favorites and access exclusive features.
Ad-free
100% free
Create my account
Learn more
Close
Photo approved