Create a cinematic but physically believable underwater exploration photograph inside a vast limestone cenote. A single scuba diver with a black wetsuit, one silver tank, mask and yellow fins swims horizontally from the lower left toward a sunlit opening in the upper right, small enough to reveal the scale of the cavern. Show exactly one diver with two arms and two fins, natural buoyancy, a subtle trail of rising air bubbles. Several sharp shafts of pale turquoise sunlight enter through the broken rock ceiling, revealing tiny suspended particles; faint caustic patterns dance over the nearest limestone ledge. The foreground rock is richly textured and dark, the middle-distance diver is crisp, and the distant water fades into deep cobalt blue. Wide 16:9 environmental composition, nuanced highlights rather than neon glow, credible underwater optics and equipment, a sense of discovery and quiet. A full-frame photograph without titles, captions, signs, branding, advertising, borders or watermarks.
