Submarine, Origami, underwater, deep sea, intricate paper folding, delicate details, shiny metallic surface, portholes, propeller, rudder, navigation lights, sonar dome, captain's bridge, instrument panel, leather-bound wheel, vintage diving helmet, oceanic surroundings, coral reef, schools of fish, seaweed, bubbles rising, sunlight filtering down, soft blue-green ambient lighting, cinematic composition, 3/4 view.