Abysseth the Necrodiver.

"If you go far beyond Space, you will start to Swim.
Because beyond space, lies the Abyss, an infinite sea of darkness...

Space is just what precedes it, for what is space if not an ocean of stars.

But is it empty?
Why, Earth's Abyss hides many things, right?...

"The Abyss" seems to be the Space Between Spaces,
From there you are sure to get into another Space if you swim enough,
Though you don't control your breathing,
you don't know how long you'll survive.
You don't control the currents,
You don't know in what Space you'll end up in.

But as with every Sea, something wants to brave it, to map it, to explore it.

And if you somehow find yourself there, you may find that something.

It maps what it can,
It catalogs every new being it finds,
It memorizes every current,
For it needs to know what it absorbs."