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GEBCO aims to provide the most authoritative, publicly available bathymetry for the world’s ocean.

Through the work of its committees and working groups, the General Bathymetric Chart of the Oceans (GEBCO) produces and makes available a range of bathymetric products.

This includes the global gridded bathymetric grid; Web Map Services to access the grid; the GEBCO Gazetteer of Undersea Feature Names; the GEBCO world map and the IHO-IOC GEBCO Cook Book— a reference manual on how to build bathymetric grids.

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Seabed 2030 Project aims to discover how much of the seafloor has been mapped already and what might be held in the world's repositories.

All existing bathymetric data will be compiled into the freely available GEBCO digital map. This map will then identify areas where there is no data to inform future mapping expeditions.

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How much progress have we made?

Use the slider to see the progress we have made in completing the Global Map since the start of the project: the map on the right shows observed data in the grid in 2014 and on the left from 2023.