Creepy Mysterious Minecraft Pocket Edition World?

Okay so I tried to use a map for the first time on MCPE and I did it wrong. I opened MCPE and scrolled down through my worlds to find a new world at the bottom. The name was blank. It said the last time I used it (which was never) was "Long Ago". This honestly creeped me TF out. Before I loaded up the world to investigate further, I went into edit mode. The seed was 0. This creeped me out even more, but I still loaded up the world. I spawned in the ocean right next to a huge chunk of land. Since I was in creative, I flew around the world. I was so creeped out, that I exited the world and deleted it. What does this mean?