The cast of Aquaman will reportedly need to be working primarily on rigs, to give the illusion that they are floating in Aquaman‘s underwater settings. And in addition to CGI helping to fill in the underwater world of Atlantis, it will also take a ton of visual affects work to properly render each character’s hair. Because instead of laying flat on their head the way it would on the surface, hair will have to be in constant weightless motion in order to move the way it normally functions underwater. The same goes for characters’ clothes. If they have anything that isn’t skin tight, the fabric will have a different way of sitting underwater.