The square is ten miles thick and 1500 miles to an edge. The oceans are here between the continents, see, and yes those two have corners. Yes. Yes. (The other planets are also various flat regular polygons. Mostly regular polygons. There's an isosceles triangle someone discovered six years ago and it's very exciting.)

How do the oceans behave around the corners?

Cornery.

...this is just wrong. All of it.

How do planets form, here?

Unknown!

Gods.

Okay... where was he, he forgot, he had so many questions to ask...

Let's go with dragons.

Dragons! There are thirty colors of them in six groups and they have many enviable magic powers and their own governmenty thing.

Are these colours species or what? They apparently can cross-breed, how's that interact with colours? What are the differences between the colours, other than, you know, colours?

(And he makes a mental note to look into geopolitics.)

(...and he makes a physical note to look into geopolitics because he's sure he'll forget otherwise.)

Dragons can interbreed with anything they damn well please, apparently, that's one of the many enviable magic powers, but insofar as Elcenia seems to construe species the colors are not their own species. They also have different cosmetic features like horns and spines and stuff per color. There is a very slight statistical tendency for intercolor offspring to take after the mother's color when there is one mother and one father; statistics are pending on same-sex couples.

...same-sex couples can conceive?

As of recently, by magic! That is why statistics are pending. If it's two dudes they need somebody helping.

That's awesome. He'll look into the prevalence of magic later. For now, what other differences are there between dragons?

There are the extra magic ones and the suuuuuper extra magic ones. There are various ages; they can live to be 2-4,000 years old if they get past the infant mortality stage. (Hella infant mortality.) Some of them are parunias, which means they turn out as dragons even though one of their parents is a nondragon.

How does the genetics of that work, exactly? And why hella infant mortality, exactly?

Magic. Also magic they're not sure?

"Magic they're not sure" seems like exactly the kind of problem he's equipped to solve.

He reads some more about dragons to see whether anything interesting catches his eye.

Dragons age slowly and are very pretty and can fly and have these naming customs and shrens exist and Dragon Island is over here and iron dragons rust but spelters don't and violet-groups have softshelled eggs and lines work like so...

—shrens?

Exist! Obscurely.

As in, there's no information on what they are, or?

There is, he just has to dig a bit. Here's an explanation.

............what.

Why, exactly, can they not fly? Is it something physical or what?

Nobody knows!

Do... dragons, in general, fly via physics of via magic? As in, is it their wings doing the work when they fly, or is it a magical thing?

Dragons are generally believed to be flying via physics.