Ocean is a 2004 six-issue comic book miniseries, written by Warren Ellis with pencils by Chris Sprouse and inks by Karl Story.

The series was originally intended to be a film script and then as a single graphic novel, leading to an absence of the traditional cliffhangers associated with monthly comics.

[1] Set in an era "one hundred years from now", Ocean is a science fiction story that tells the tale of Nathan Kane, a United Nations special weapons inspector, and his mission to Cold Harbor, a UN research station in orbit around Europa.

This culture's home world was located between Mars and Jupiter, and in their ongoing civil war against each other, they wrought great damage on Mars, which used to be a far more temperate, colonized Earthlike planet before its atmosphere was destroyed in the same conflict that also utterly destroyed their home planet, its remains eventually becoming the asteroid belt.

However, thanks to the unscrupulous acts of the insane manager of a weapons testing facility also in orbit around Europa, owned by an interplanetary corporation named Doors, the race starts to wake up, putting the Earth itself at risk from the resurgence of the extremely powerful and violent precursor race, and Nathan and the Harbor scientists are practically the only ones that can stop them.