User blog comment:FairyRaven/Fairy Tail Chapters 338, 339, 340: Review and Commentary/@comment-5598380-20130706211549/@comment-203.215.121.141-20130707044736

Actually i'm just saying Mashima may make his version of the Fishman Island Arc of One Piece. In FT, Mashima uses the concept of Parallel Worlds. So maybe aside from Edolas, there's another world below.