SeaDataNet Common Data Index (CDI)
Pan-European discovery and access service indexing marine and ocean data from 100+ data centres across 34 countries. Covers physics, chemistry, water quality, geology and bathymetry around European seas, with subset requests and downloads.
cdi.seadatanet.org
At a glance
- Region
- Pan-European (Europe)
- Coverage
- European seas
- Access
- Free
- Category
- Research Institute
- Last updated
- 2026
What's inside
- marine data
- water quality
- oceanography
- bathymetry
What you can do with it
Typical work that data of this type supports.
- 01
Sea-level planning
Plan for sea-level rise and storm surge.
Because it has: marine data
- 02
Saline intrusion
Track salt moving into rivers and aquifers.
- 03
Hotspots and trends
Find where contamination is high and whether it is getting worse.
Because it has: water quality
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Surge forecasts
Forecast surge and coastal water levels quickly.
- 02
Shoreline change
Detect erosion and accretion from imagery.
- 03
Risk maps
Predict contamination where no samples exist, from geology, land use and climate.
Machine access and documentation
Open API
CDI discovery/download service; OGC CSW catalogue interfaces
Licence: Open data
Listed in our registry of open water APIs, which WaterDataGPT can query live.
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