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 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, and Jibiki, along with a small fleet of ships, commenced a plan to disrupt a ceremony unveiling a new power system in Kirigakure and break Araumi free from prison.

Trivia

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