Skip to content
Species
First Aid
Explore
Information
🇬🇧
🇫🇷 FR
🇬🇧 EN
🇪🇸 ES
🇮🇹 IT
🇳🇱 NL
Login
View all alerts
Plage de Saint-Guérin,
Damgan, France
No information
13.4°C
Last updated :
02/11/2026 06:00
Contribute
Worldwide
France
Brittany
Damgan
Plage de Saint-Guérin
Beach
Unnamed beach
Grande Plage
Unnamed beach
Plage de Kervoyal
Unnamed beach
Unnamed beach
Unnamed beach
Unnamed beach
Unnamed beach
Unnamed beach
Unnamed beach
Plage de Saint-Guérin
Plage de Landrezac
Unnamed beach
Unnamed beach
Latest reports
No recent reports
Jellyfish density evolution
7 days
30 days
Report detail
Scientific identification:
(
)
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) --
Unnamed beach
Grande Plage
Unnamed beach
Plage de Kervoyal
Unnamed beach
Unnamed beach
Unnamed beach
Unnamed beach
Unnamed beach
Unnamed beach
Unnamed beach
Plage de Saint-Guérin
Plage de Landrezac
Unnamed beach
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