One piece Island theory: Thriller Bark: What if Thriller Bark in one piece was actually a pre war museum/ science lab that the old government sent out to sea on a huge ship to protect it from destruction?? Like a huge Noah's ark. The museum ship also had a huge freezer on it, along with a huge garden, rare artifacts, rare animals, ancient samurai mummies, and more. It was probably a pre war self sufficient ship island sent out to preserve man kinds most important artifacts, but something went wrong and everyone onboard died, which explains the huge grave yards, and moats filled with human bones. They probably had to put the dead bodies in the moats to prevent spread of disease from a sickness that went around and killed everyone. The grave yards we're already filled to the brim. The giant freezer was most likely used to preserve all of the 100s of rare animals on earth until they could be relocated, but then Gecko Moria and the mad doctor came along and turned them all into zombies, along with the dead people in the graves... Then he emptied the freezer and used it to store Oars, the giant red monster he found frozen in the sea. Also It is possible that Oars was one of the monsters that helped wipe out the old world because they say it died 100s of years ago, and it wiped out entire countries. His true origin and age is unknown, and he probably was a Hell demon sent from Hell to wipe out mankind long ago. He failed though and fell in the ocean causing him to freeze to death..... Then Gecko Moria and the Mad doctor found him, turned him into a shadow zombie, and put Luffys shadow into him.... (Great war spoilers:) Also somewhere along the way, Oars had a son named Oars Jr, and you see him later on during the great war, where he too dies.... He dies by the hand of Doflamingo, and Gecko Moria combined, along with Navy cannon fire. Anyways though, that's about it for Thriller Bark, and It's a shame Gecko Moria ruined such a historical Island ship... I will upload more theory's later though, and be sure to leave comments to tell me what you think! Also, let me know if I missed any details, and be sure to tell me which Island to write about next! Thanks for reading!