Nah, man- the ocean is just that big. It covers the whole planet, except where there are the little islands spotting over it. Think about one person, and then how big a planet is- and then how deep the ocean must go. And how much space that is. And how much stuff can fit in that space. And just how big some of that stuff could get. And we'd never know.

[Jesse is successfully freaking himself out now.]

It's just like space. There's no end to space! Space just keeps going! What's out there? How can it not end? There's got to be an end!