The first footage from Warner Bros.' Aquaman film was debuted at CinemaCon in LA yesterday - but it was very much a work-in-progress. According to The Hollywood Reporter, the footage showed Aquaman "pulling a submarine out of the water, what appeared to be shark horses and vistas of Atlantean skyscrapers." Yahya Abdul-Mateen II's Black Manta and Patrick Wilson's Ocean Master also made an appearance. THR reports that director James Wan made it clear that the footage was not an official teaser trailer.