The 2025 release of the GEBCO bathymetric grid is now available to download.
The GEBCO grid is global data set of elevation values, in metres, on a 15 arc-second interval grid.
The grid is developed through the Nippon Foundation-GEBCO Seabed 2030 Project. This is a collaborative project between the Nippon Foundation of Japan and GEBCO. The aim of the project is to map the global sea floor by 2030.
For this release of the GEBCO grid, 27.3% of the world’s ocean floor has now been mapped to modern standards compared with 26.1% for the previous release in 2024.
GEBCO's grids can be downloaded as a global file in netCDF format or for user-defined areas, through our download app, in netCDF, data GeoTiff and ESRI ASCII raster formats. The data set can also be downloaded in the form of imagery.
Find out how to contribute bathymetric data sets to help update the global GEBCO grid.
GEBCO's aim is to provide the most authoritative publicly-available bathymetry of the world's oceans. It operates under the joint auspices of the International Hydrographic Organization (IHO) and the Intergovernmental Oceanographic Commission (IOC) (of UNESCO).
Find out more about GEBCO's work and data sets.