The Mure Mure no Mi (mure being the Japanese word for swarm) is a Paramecia-type Devil Fruit that allows the user to create and control any kind of insect.
It resembles a dark-green papaya with zig-zagging lines on it.
The greatest strength of the fruit is that it allows the user to control any kind of insect known to man, even going so far as to be able to create insects from nothing. A rumor also circulates that anyone who has consumed a Insect-zoan could be suspectible to fall under the user's command, but so far, this is nothing but rumors.
While the user can create insects from virtually nothing, those insects are known to be less lethal than regular insects, some losing their poisonous abilities if the insect can spread any kind of poison. Other than that, only the standard weaknesses applied