Nadia: The Secret of Blue Water (Fushigi no Umi no Nadia) is a Japanese animated TV adventure (anime) series based loosely on Jules Verne's 20,000 Leagues Under the Sea.

One of the most popular animated series ever done in Japan, it was created by animation stuido GAINAX. Set in 1889, the story focuses on Nadia, a 14 year circus acrobat and orphan with a mysterious past.

Production Information is as follows:

TV series (39 episodes + movie) by GAINAX 1989-1990
Originally broadcast from 4/13/90 to 4/12/91 by NHK Sogovision
Released in US by Streamline Pictures (dubbed only) and ADV Films.

Cast:
Nadia - Yoshino Takamori
Jean - Noriko Hidaka
Marie - Yuko Mizutani
King - Toshiharu Sakurai
Grandis - Kumiko Takizawa
Sanson - Kenyuu Horiuchi
Hanson - Toshiharu Sakurai
Gargoyle - Motomu Kiyokawa
Captain Nemo - Akio Ohtsuka
Electra - Kikuko Inoue
Eaton - Kouji Tsujitani
Emperor Neo - Kaneto Shiozawa

Staff:
Series Director - Hideaki Anno
Director (eps. 23 - 39) - Higuchi Shinji
Character Designs - Yoshiyuki Sadamoto
Layouts - Maeda Masahiro
Art Directors - Kikuchi Masanori, Sasaki Hiroshi and Ogura Hiromasa
Music - Sagisu Shiro
Animation Producers - Murahama Shoji and Kawahito Kenjiro