Natural Earth’s bathymetry raster dataset provides bathymetric data for oceans and seas around the world. At a resolution of 1:50m, the dataset is an excellent base layer for small-scale maps.
This global raster dataset from Natural Earth provides a shaded relief view of the ocean floor with blended colors. Derived from CleanTOPO2 data, it is available in two resolutions: 1:50m and 1:10m.
This worldwide dataset includes polygons with detailed shorelines for all oceans, bays, and major lakes. The data was extracted from OpenStreetMap and cleaned to provide an excellent base layer for large-scale maps.