Marine Map Tool — publication-quality bathymetric maps in the browser

Region

Preset

West East South North

The exported figure uses exactly this region.

Bathymetry & colour

Colormap (cmocean)

Reverse colormap Depth range floor: −8000 m Hillshade relief Isobaths (depth contours) Isobath interval Land style

Stations

Upload a CSV, TSV or Excel table with latitude/longitude columns. Nothing leaves your browser.

Symbol size (mm) Colour

Colour by value (cmocean thermal) Show names on export

Data layers

EEZ boundaries (Marine Regions)

Exclusive Economic Zones from MarineRegions.org (CC-BY). Loaded on demand for the current view.

Transect (depth profile)

Draw a line across the seafloor to read its bathymetric profile — sampled in your browser from the same DEM as the map.

Species occurrences (GBIF / OBIS)

Plot georeferenced records for a taxon in the current view. Points become stations you can style and export.

Taxon name

Source Max points

Cartographic furniture

Figure title (optional) Scale bar North arrow Graticule + coordinate labels Inset locator (globe)

The data-attribution line is always included — it keeps your figure compliant with the data licences.

Journal & export

Journal figure spec

Width PNG resolution

Need TIFF/EPS? Export the PyGMT script below and render locally — that's also the reproducible, citable path.

How to cite

Free to use. If this tool saved you time, cite it — the DOI lands with the first tagged release (see CITATION.cff).