Devil Fruit - one piece

(here we call temporarily DF) is a mysterious fruit appeared in the manga One Piece. The DF shapes are very bizarre with whirls on the body, based on this pattern, one can guess a little about the capacity that it gives the user.

Each DF gives its users a different ability and it is said that in the world, at the same time there will be only one DF with the unique ability. That is, if Gomu Gomu no Mi is left for Luffy's rubber power, then there is no second left. And if Luffy bears death, then the next Gomu Gomu no Mi will appear in the world.

DF will have the characteristics that are extremely difficult to eat, people use it at the meal will feel like you are drinking poison. But after eating, it will bring immediate energy to the user. The only disadvantage that it brings is that the DF leaves a curse that causes its possessor to be overwhelmed by sea water and can not control its ability under the sea (its power is still , just can not control it only)