ED _OP1 _OP2 Episode 1 Girl at the Eiffel Tower Episode 2 The Little Fugitive Episode 3 The Riddle of the Giant Sea Monsters Episode 4 Nautilus The Fantastic Submarine Episode 5 Marie's Island Episode 6 The Fortress on the Solitary Island Episode 7 The Tower of Babel Episode 8 Nadia's Rescue Episode 9 Nemo's Secret Episode 10 Gratan in Action Episode 11 A New Student on the Nautilus Episode 12 Grandis' First Love Episode 13 Run Marie Run! Episode 14 The Valley of Dinichthys Episode 15 Nautilus' Biggest Crisis Episode 16 The Mystery of the Island that Vanished Episode 17 Jean's New Invention v2 Episode 18 Nautilus vs Nautilus Episode 19 Nemo's Close Friend Episode 20 Jean's Failures Episode 21_Goodbye_Nautilus Episode 22_Electra's_Betrayal Episode 23 Little Castaways Episode 24 Lincoln Island Episode 25 First Kiss Episode 26 King's on his Own Episode 27 Island of the Witch Episode 28 The Floating Island Episode 29 King vs King Episode 30_The_Underground_Labyrinth Episode 31 Goodbye Red Noah Episode 32 Nadia's Lover Episode 33 A Rescue Operation for King Episode 34 Love to Nadia Episode 35 The Secret of Blue Water Episode 36 The All-purpose Battleship New Nautilus Episode 37 Emperor Neo Episode 38 To Space Episode 39 Inheritor of the Stars v2