A new clip and Chinese poster for Aquaman showcases the DCEU film's central conflict between Arthur Curry and his half-brother Orm, with the two dueling for the fate of the seven seas.

The clip, which originally aired on CBS, shows Arthur and Orm dressed in gladiatorial armor and armed with their family's tridents as they face each other in single combat in an underwater arena before the people of Atlantis.

RELATED: Aquaman Contains a Creepy Conjuring Easter Egg

"You have my mother's trident. Powerful, but flawed, like her," observes Orm as he faces Arthur. "I wield my father's. It has never known defeat!"

The new, international poster features the more comic book faithful outfits for the two characters as they confront each other for undersea supremacy with Atlantean soldiers in battle seen in the background as Arthur wields the fabled Trident of Neptune.

RELATED: Aquaman: Jason Momoa Details His First Time Wearing the Costume

Directed by James Wan, Aquaman stars Jason Momoa as Aquaman, Amber Heard as Mera, Patrick Wilson as Ocean Master, Willem Dafoe as Nuidis Vulko, Yahya Abdul-Mateen II as Black Manta, Temuera Morrison as Thomas Curry, Dolph Lundgren as Nereus, and Nicole Kidman as Queen Atlanna. The film opens on December 21.

(via ComicBookMovie.com)