Nadia: The Secret of Blue Water

Nadia: The Secret of Blue Water (ふしぎの海のナディア Fushigi no Umi no Nadia, lit. "Nadia of the Mysterious Seas") is a Japanese anime television series that originally aired from April 13, 1990 to April 12, 1991 on NHK-G in Japan.

The series was inspired by the works of Jules Verne, particularly Twenty Thousand Leagues Under the Sea and the exploits of Captain Nemo. The series was created by NHK, Toho and Korad, from a concept of Hayao Miyazaki, and directed by Hideaki Anno of Gainax.

Dubbing History
The series was originally licensed by Streamline Pictures in 1991. The first 8 episodes were dubbed and released on 8 separate VHS releases between March 1992 and August 1993 under the title of Nadia. Plans for a Television broadcast broke down, and the series was dropped by Streamline. The episodes would later be re-released by Orion Home Video on 2 VHS tapes in January 1996 as The Secret of Blue Water.

During June 1999, ADV Films announced they had licensed the series for North America. A new dub would be produced by ADV using their Austin-based Monster Island Studio and directed by Charles Campbell. Released on DVD and DVD from June 19, 2001 to July 16, 2002, the Monster Island dub was the first dub by the studio to receive generally positive reviews. In contrast to the original Streamline dub, particular praise focused on ADV's decision to cast actual children in the roles of the three young protagonists. Some reviews criticized the sometimes inconsistent accents, but others acknowledged their appropriateness for the story.

With the collapse of ADV in 2009, the rights to Nadia would later be purchased by Sentai Filmworks in 2014, releasing the show along with the Monster Island Dub to Blu-Ray and DVD.

In April 2022, GKIDS picked up the rights to Nadia and released it in a 4K restoration on Blu-Ray on August 2, 2022.