Map: 2 New maps: Otherland and Spheres

[Singularity24601]

Originally Posted by Sombre

I think there's more scope for maps which do interesting things with water provinces - deep trenches and coral reefs and underwater caves for instance.

Here here. I'm currently making Earth-based maps by combining satellite photos with topographic and bathymetric data (estimated ~2000 provinces for the whole planet, but I plan to release smaller sections separately). Researching and interpreting ancient names of all the world's provinces, bays, gulfs, straits, etc, is slow though manageable, but I've found relatively little information on the names of Earth's underwater terrain features. Sure I've got the main trenches, ridges and basins, but anyone know where I can find more detailed resources such as this example?