# Overlay Layers Overlay Layers refers to any data layer not include in a [Basemap](/seasketch-documentation/administrators-guide/basemaps-maps.md). SeaSketch supports [directly uploading spatial data](/seasketch-documentation/administrators-guide/overlay-layers/uploading-spatial-data.md) in SeaSketch, as well as data from remote web services. It also supports managing [layer metadata](/seasketch-documentation/administrators-guide/overlay-layers/metadata-and-attribution.md), updating and [tracking data versions](/seasketch-documentation/administrators-guide/overlay-layers/uploading-spatial-data.md#managing-new-versions-of-a-dataset), includes [advanced cartography tools](/seasketch-documentation/administrators-guide/overlay-layers/cartographic-styling.md), and numerous [interactivity options](/seasketch-documentation/administrators-guide/overlay-layers/interactivity-and-popups.md). We aim for SeaSketch to provide a complete data portal solution in a single tool, using the latest technology to make data viewing and management fast and intuitive. Anyone can using SeaSketch to support marine conservation planning can create a project, and each include 10 GB of free data hosting. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.seasketch.org/seasketch-documentation/administrators-guide/overlay-layers.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.