The other day I had an idea for a world for a potential future campaign. It was focused on my semi-fascination with sunken cities, ships, castles, etc as a location for adventures in movies, comics, videogames, RPGs, and everything else. The idea became persistent to the point it wouldn't let me think about other stuff. And so last night I set out to make the world. Only I had one problem: I know basically nothing about geology, and most of my friends know - especially by comparison - quite a bit. It happens a lot where aspects of maps irk them just because it goes against expectations.
Now I'm a big fan of fantasy being able to break rules from how the real world works. After all, in a Fantasy universe gods, magic, and monsters are all provably real. But it is also nice to have a grounding in at least the basic aspects of our world. If nothing else it pre-emptively solves problems. You don't need to figure out where is dry - and why it is dry - when you know how the winds generally travel in your world. And so working with my friends over the course of about two hours we made the following world, and I figure I will present it step by step so you can see how it went.