Silent Thief in a Bioluminescent Underwater Cave

Photorealistic cinematic scene of a stealthy thief gliding through an underwater limestone cave. The thief wears a sleek black wetsuit, a compact rebreather, a half-face mask, and flexible gloves; a small satchel hangs at their side, catching the pale bioluminescent glow. The cave is lined with stalactites and stalagmites, covered in coral and sponges, illuminated by drifting beams of sunlight filtering through the water and the glow of bioluminescent algae. Particles drift in the blue-green water as bubbles escape from the thief's regulator. A treasure chest lies half-buried in the silt, hinting at the loot, while a school of tiny fish circles overhead. The mood is tense and cinematic, with hyper-real textures on skin, fabric, metal, rock, and water, and a moody, high-detail color palette.