VIDEO : 'Aquaman': Why Atlanteans Vomit When Out of Water

Living underwater means lungs are filled with fluids, which is why Atlanteans will spew it out like vomit when they are suddenly out of water in Aquaman. While visiting the edit bay of Aquaman with director James Wan, ComicBook.com saw a trio of scenes from the upcoming DC Comics film. Following one sequence which pitted Orm against Arthur, Mera is forced to rescue Aquaman from the battle by opening a patch of air underwater. "Just from a practical standpoint, people ask me, when they talk, 'Is it bubbles that come out of their mouth?'" "No, 'cause there's no air in your lungs, so there wouldn't be any bubbles, right?