Shima Shima no Mi

The Shima Shima no Mi is a Paramecia-type Devil Fruit that allows the user to merge their own body with an island's environment, turning them into an Island Human (島人間). It was eaten by Avalo Pizarro.

Etymology

 * Shima (島) is Japanese for "island".

Strengths and Weaknesses
The main strength of the Shima Shima no Mi is that it grants the user the ability to assimiliate themselves with the environment of any island, be it natural or artificial, and then manipulate said environment freely. For example, the user can similarly merge themselves with a mountainside or floors built from wood, as long as they are in contact with them.

The user can further manipulate the landmarks they are assimilated with to perform actions such as talking (by creating a fissure on its surface to act as a mouth, for example). They are also apparently sensitive to the actions of people that act upon the environment they are merged with.

As hinted by the fruit's name, it is unknown if the user has any limitations regarding non-island locations. Otherwise, they are susceptible to all the common weaknesses among Devil Fruit users.

Usage
Pizarro utilizes his fruit's ability to become one with the island of Hachinosu, possessing the skull-shaped rock formation at the center of the island to communicate with the island's inhabitants. He is also able to detect prison breakouts through an itching sensation, allowing him to quickly warn others should they happen.

Egghead Arc
Pizarro gained his ability at some point likely as a result of the Blackbeard Pirates' Devil Fruit hunting.

Trivia

 * This fruit is very similar in nature to Pica's Ishi Ishi no Mi, with the only noticeable difference being that while Pica is limited to possessing stone-based constructs, Pizarro can possess any environment.