Numa Numa no Mi

The Numa Numa no Mi is a Logia-type Devil Fruit consumed by Caribou. "Doronuma" is an onomatopoeia of swamp or mud, making Caribou a "Swamp Man".

Strengths and Weaknesses
With the Numa Numa no Mi, Caribou can create bottomless swamps which are impossible to escape from. If someone is caught by the swamp created by Caribou, they will sink more if they struggle. Like most of the other Logia users Caribou cannot be hit or sliced as his element is intangible. The user cannot transform back to their normal form if they are in a space that their normal body can't fit in.

Due to this weakness Franky was able to capture and seal Caribou in a barrel easily. Other than that the user is affected by the standard Devil Fruit weaknesses

Usage
With his Devil Fruit powers, Caribou can create bottomless swamps by turning his lower body into a swamp. He can also capture living beings

like he did when he used his powers to capture some mermaids. Caribou can also use it to suffocate his opponents by encasing their head in a ball. Like other Logia users he can evade attacks by turning his body into the related element, in this case, swamp.