[@ZxyxZemon]

<Snipped quote by malmshodes>

So how did dude get so into stars? Books, videos, occasional trips to the surface? How much time did he spend under water, and at what pressures? Was he born on the sub? Stuff like that could influence the growth of the characters abilities as well. Growing up in high pressure environments would definitely change the way you develop. 

..Also, why aliens? 

[/quote]

Aliens came from a combination of books, and the strange creatures he did see, with his own eyes, while watching through the windows while the submarine moved under the sea.  Plus, as a child, he was well aware of life existing at different levels since he's seen them underwater, and fully aware there's plenty more on the surface, land, and sea.  So he's certain that when you go up you'll eventually find more forms of life.   

Not sure the exact pressure though.  I'll have to give that more thought.