The Usagi no Tankentai (Rabbit's Exploration Party) is an expedition which tends to be funded by Guillaume Speirs LeBrix. They're world-renowned for having completed the nigh-unconquerable challenge of exploring the entirety of one of the Calm Belts of Paradise with naught but a rowboat of all things. Recently, the World Government has payed them to search the Grand Line for the One Piece and then proclaim the legendary treasure to be hoax regardless of whether or not it actually is.