With Marvel and Star Wars absent from San Diego Comic-Con this weekend, there's much focus on what DC is bringing to the show. The studio has three movies scheduled for release over the next 18 months--Wonder Woman 1984, Shazam, and Aquaman--and we know that trailers for the latter two are set to debut at SDCC. In advance of this, the first poster for Aquaman has been revealed, together with a tease for the trailer.

The poster shows Jason Momoa as Aquaman, perched on a rock in the ocean, surrounded by all manner of sea-life. The trailer tease, meanwhile, was tweeted by director James Wan and is a picture of an editing suite where Wan states he is "working overtime to put the finishing touches for this coming week." On the screen we can see an image that is presumably from the Aquaman trailer, with our hero holding his trident aloft while the tail of a large sea beast crashes into the waters in front of him. Check the tweet out below, and the poster at the end of this story.

Who the Heck is Aquaman?

This latest image follows a new picture from the movie that was revealed last week. It showed the royal palace of the Fisherman King, who is played by Djimon Hounsou. We've also had recent images revealing many of the other characters, including Orm (Patrick Wilson), Vulko (Willem Dafoe), Queen Atlanna (Nicole Kidman), and Black Manta (David Kane).

In a recent interview with The Hollywood Reporter, Wan spoke about the technical challenges of making a film set entirely underwater. "It was a very technically challenging shoot to be on," he said. "Working with water, and even the dry-for-wet sequences are very complex. Our equivalent of two people sitting around chatting in the underwater world is super complicated.

"You have to think about CG with the hair, and how their clothing moves, how are they floating, what kind of rig we put them on, and all that stuff. [It's] very difficult and time-sucking to do all of this. So it was not an easy shoot--but hopefully it will pay off in spades down the line."

Aquaman hits theaters on December 21. For more, check out GameSpot's look at what we want from DC movies & TV shows at SDCC 2018.