The first questions that come to my mind pertain to the significance of the other world beyond the rift. Theories?
My guess is that the Snarl, being made up of reality, has created a reality from itself. Perhaps it uses whatever it can draw from our world to create it's own world. Sort of like a kid stealing legos from his friend's project so he can add on to his own. We know from today's comic that there are no fish in the ocean, meaning that there probably isn't much in the way of life anywhere on that world. Perhaps that's what the Snarl needs to finish it's world.