No, the Tuna don’t have no Tuner.
Episode 15: 出航！ゴーハ水産小 – Shukkō! Gōha Suisanshō
(Setting Sail! Goha Fisheries Elementary School)
According to Kaizo, the mysterious “ruins” have showed up again! Following Kaizo’s instructions, Yuga and co. boarded the ship that also acts as a school building for Goha Fisheries Elementary School. As it turns out, the ship that Yuga and co. boarded will be at sea for a month or so. Due to a misunderstanding revolving around Kaizo, Yuga will also fight against the ship’s captain and Fisherman Duelist, Maguro Nanami, in a Duel in the middle of the sea!
Odo Yuga: Ishibashi Hiiro
Kamijo Tatsuhisa (Rook): Yashiro Taku
Sogetsu Gakuto: Hanae Natsuki
Kirishima Romin: Kusunoki Tomori
Kaizo: Kobayashi Yusuke
Maguro Nanami: Furukawa Makoto
Goha Fisheries Elementary School’s students: Yamane Masashi, Kumagai Kentaro, Yasuda Rikuya, Kawano Mari, Morinaga Chitose
Otis: Namikawa Daisuke
Script: 久尾歩 || Hisao Ayumu