32k photo-realistic, high-definition A retro-style movie poster for a science fiction film titled "World Without Sun," featuring a group of divers exploring the ocean depths. The poster includes a futuristic submarine, a diver, and a giant octopus. The poster's tagline, "Plunge into astounding true adventure... with Earth's first oceanaughts!" adds to the sense of adventure and excitement. The colors are vibrant and saturated, creating a dramatic contrast between light and dark. The style is reminiscent of classic 1950s sci-fi posters, with bold colors and a sense of impending doom.