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This request returns information about the layers contained in the service, for example, their content and geographic extent. The information is returned in the form of a XML file (you may need to save this to disk to view the information). The following links provide access to example GetCapabilities calls to GEBCO's WMS.WMS 1.3.0 GetCapabilities request for the global GEBCO grid.WMS 1.1.1 GetCapabilities request for the global GEBCO grid.Using the information given in the GetCapabilities request, the user can specify parameters such as the required layer, the geographic extent of the map and the size of the returned image. Please note that the longitude range for the global WMS extends from -180 to 360 degrees to allow plotting centred on 180 degrees. GEBCO_2021 Grid - with ice surface elevation information The following are example GetMap requests for GEBCO's WMS.