Sui Sui no Mi

The Sui Sui no Mi is a Paramecia-class Devil Fruit that allows the user to swim on the ground or on walls. "Suisui" is the Japanese onomatopoeia for smoothly, swimmingly. It was eaten by Senor Pink.

Strengths and Weaknesses
This fruit's main strength is that it allows the user to swim in solid ground and walls as if they were water.

This fruit does not seem to have any specific weaknesses, aside from the standard Devil Fruit weaknesses.

Usage
Senor Pink has been seen using his power to swim in the ground and sneak up on his enemy from behind. It can also be used to allow him to escape, but he claimed that his pride does not allow him to do so. This may or may not be true, as he was protecting the incapacitated soldiers behind him at the time.

Trivia

 * Ironically, while the user of the Sui Sui no Mi can swim through solid surfaces, they remain unable to swim in water, due to the usual Devil Fruit weaknesses.