Funato Clan

The is a clan of pirates in the Land of Water. One of the oldest known clans in the country, the Funato clan were known for their plundering, abductions and strength on open water. Most members have been shown to be proficient in Water Release ninjutsu. Those who are of the same bloodline of the clan head Araumi are central members, while the bulk of their numbers consists of like-minded individuals. Eventually, a large operation was carried out to capture Araumi, who was defeated in battle by the Sixth Mizukage, thus causing them to scatter.

Five years after his imprisonment, Araumi's son, Isari, commenced a plan to breakout his father from prison by disrupt a ceremony in Kirigakure as a distraction. Meanwhile, his brother Tenma would lead a fleet of pirates to occupy islands throughout the Land of Water, utilizing a giant, mobile sea fortress armed with a massive Scientific Ninja Tool as a Chakra Cannon.

Trivia

 * The kanji 舟 in "Funato" means "boat", alluding to their piracy.