The ocean doesn't feel like a wasteland here, it feels like a graveyard where something worse than humans learned to hunt. Zorndyke's creations move with a weight and purpose that makes every encounter feel like watching evolution decide you're obsolete. Four episodes is criminal, but they're four episodes of 1998 animation that still moves like nothing else was being made at the time, a submarine crew watching the world end one depth charge at a time.

Humanity's hold on Earth faces a threat from creatures bred to live in the oceans and destroy people. Their creator is Zorndyke, a scientist once famous and widely respected, who has decided humans should no longer rule the planet. Blue Submarine No. 6 and the rest of the Blue fleet must stop his mad plan and the beings he has made. The four-episode OVA mixes action, adventure, mecha and science fiction.