Underwater coral reef scene comes alive. Sunbeams shimmer and sway gently through the water surface, caustic light ripples across the sand and coral. Schools of small orange fish drift slowly to the left, a few darting. The sea turtle glides forward with slow, steady flipper strokes. Seagrass in the foreground sways softly in the current. Tiny bubbles and particles float upward. Camera stays still with a very slight slow push-in. Calm, gentle, realistic motion. No new objects.