Submerged Time Machine in Crystal Blue Waters

Photorealistic underwater scene featuring a retro-futuristic time machine half-buried in the sandy ocean floor. The device blends brass gears, glass chronometer domes, and titanium panels, with a glowing time-warp core pulsing softly. Sunlight filters through turquoise water, casting blue-green caustics and warm amber highlights on the machine's metallic textures. Surrounding life includes swaying kelp, coral formations, and small bioluminescent fish. Bubbles rise from an open hatch; drifting particles and fine sediment create a sense of depth. A distant silhouette of a curious diver provides scale. The scene conveys anticipation of travel, with a faint shimmering portal forming inside the chamber. Hyper-real detail, high dynamic range, shallow depth of field around the machine, crisp textures on metal and glass, cinematic underwater lighting, color palette of deep blues, teal, gold accents, and warm amber light.