Nadia: The Secret of Blue Water - Nautilus Story I (1991)
Nadia: The Secret of Blue Water - Nautilus Story I

Overview
The first specially edited memorial episode featuring Jean’s narration. This is a breath-taking sea adventure action animation. The story centers on a series of critical battles by the indestructible submarine, Nautilus and the conflict between Captain Nemo and the Gargoyle. It’s a shorter, more streamlined version of Nadia called "The Nautilus Story", which all but eliminates the filler arc and concentrates on the struggle between Nemo and Gargoyle. Some scenes in the more pivotal episodes are cut as well. The compilation series was made by Hideaki Anno, who was said to have been dissatisfied with the final result of the TV show. The Nautilus Story was only released in Japan on VHS and laserdisc.
Nadia: The Secret of Blue Water - Nautilus Story
Similar
Pokémon: Arceus and the Jewel of Life (2009)
Monica and Friends: Lessons (2021)
Guilty Crown: Lost Christmas (2012)
Detective Conan: Black Iron Submarine (2023)
KochiKame Final: Kankichi Ryotsu's Last Day (2016)
Dragon Ball Z: The World's Strongest (1990)
Dragon Ball Z: The Tree of Might (1990)
Dragon Ball Z: Lord Slug (1991)
Dragon Ball Z: The Return of Cooler (1992)
Go! Go! Ackman (1994)
Code Geass: Lelouch of the Rebellion I - Initiation (2017)
Code Geass: Lelouch of the Rebellion II - Transgression (2018)
Code Geass: Lelouch of the Rebellion III - Glorification (2018)
Embracing Love: Cherished Spring (2005)
Genius Party (2007)
Detective Conan: The Scarlet Bullet (2021)
Pokémon the Movie: Secrets of the Jungle (2020)
Tomorrow's Joe The Movie (1980)
Used Video Shop's Female Shop Clerk X (2016)
Big Fish & Begonia (2016)