Blue Submarine No. 6

Blue Submarine No. 6 is a post-apocalyptic manga series written and illustrated by Satoru Ozawa, first published in 1967 by Akita Shoten. The manga was subsequently adapted into a four-episode original video animation (OVA) series by Gonzo. The anime adaptation was released in the United States on April 4, 2000. It uses a hybrid approach, combining 3D computer graphics with traditional animation, and is a pioneering example of this technique. It aired in the United States on Cartoon Network's Toonami block on November 6, 2000. The jazzy and atmospheric score was provided by rock n' roll big band The Thrill. The anime was intially licensed by Bandai Entertainment until their shutdown in 2012. Discotek Media has since licensed the OVA and will be re-released on DVD and Blu-ray in 2013. Blue Submarine No. 6 also aired as part of [adult swim]'s April Fools stunt.

Plot
The story begins in the far future, when the Earth's oceans have risen and flooded most of the sea-lying land on Earth. The rogue scientist Zorndyke caused the flooding, which killed countless individuals, and most of humanity's remaining cities have been attacked or destroyed by Zorndyke's army of half-animal "hybrids". The remaining humans begin to wage war against Zorndyke's seagoing creations for simple survival. Humanity's best hope for a resolution to the conflict lies with its submarine forces, among which is the focus of the story, Blue Submarine #6. It is revealed that Zorndyke is attempting to decisively end the conflict in the favor of his hybrid children by artificially inducing a polar switch using geothermal energy at the South Pole.