“Aquaman” has been super complicated to shoot because of, you guessed it, water

Filming for upcoming DC film Aquaman is well underway, but it seems there’s one major challenge to making a film set in the ocean. You guessed it: water.

Before our internet boyfriend Jason Momoa protects Atlantis from whatever is going to cause strife in the standalone film, he’ll become a fish (of sorts) out of water in Justice League,alongside Ben Affleck, Henry Cavill, Gal Gadot, and Ezra Miller. That’ll hit theaters on November 17th, with Aquaman swimming onto screens on December 21st, 2018.

Now, we’re really excited to see Atlantis in all its glory in Aquaman, but according to director James Wan, it isn’t easy making a movie in which everyone is underwater a lot of the time.

"It's a very technically challenging shoot to be on," Wan told The Hollywood Reporter. "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."

You may be wondering how water could be an issue for a film set in and around water.

This *is* Aquaman, after all. Wan stressed to THR he’s been avoiding CGI for as much of the film as possible, using the actors in as many of the underwater scenes as he can. So it’s been purposefully more difficult, but hopefully that will be for the better in the long run.

"That just makes it very difficult and time-sucking and time-challenging to do all of this," Wan added. "So it's not an easy shoot — but hopefully it will pay off in spades down the line."

This sounds really badass, and we can’t wait to see Momoa, Nicole Kidman, Dolph Lundgren, Patrick Wilson, Amber Heard, and Willem Dafoe in action when Aquaman hits theaters in 2018.