Eel Mode is the technique that has earned Isamu the name Unagi-o (うなぎ王, Eel King). Transforming into a fish-man hybrid, Isamu now renowned as an ultimate underwater shinobi, drastically changes his appearance, giving them red scale-like skin, fins, and gills. This form gives them supreme fighting skills in the water, as they can move through the water much faster than normal, as well as giving them the ability to breathe underwater. Becoming one with water, his Suiton abilities are even more fearsome as they now take less of an effort and consume less of his chakra. In addition, his Lightning abilities are greatly intensified as well, admitting the man to electrify his opponent to death with a single touch. His speed is greatly enhanced allowing him to travel at a speed comparable to the Jōkyūkan Ninjutsu: Suishayusō. (上級忍術 水車輸送, Technology Ninjutsu: Water Fleet Conveyance) A technique is a large-scaled, space-time variant of the Water Flicker Technique that allows a ship to travel instantaneously throughout a body of water to reach a destination that would otherwise take much longer to reach. Even while in this form, the Eel King can manifest his various abilities, often releasing his dense metallic bones on his upper-half of his body to help compliment his taijutsu/kenjutsu while underwater. This form only lasts twenty minutes max and after using such a technique, it exhausts fifty percent of his chakras and giving him the anatomy and body of a normal person for an hour, making him susceptible to fatal damage.