I'm looking for a tidal range GIS layer. Anything global that shows either mean tidal range, maximum tidal range, or maximum tidal height. I have been trawling the web for tide related GIS layers and they don't seem to be available. If any one knows of a source, please let me know!
https://oceanservice.noaa.gov/facts/find-tides-currents.html and https://tidesandcurrents.noaa.gov/map may or may not be helpful. These are point tide measurements/predictions, not "shapefiles", but it may be a start.