A cinematic, high-detail professional book cover artwork for an underwater adventure thriller. A sleek, modern deep-sea research submarine with glowing spotlights cutting through the dark, murky blue depths of the ocean. In the background, the shadowy, jagged silhouette of a massive, rusted shipwreck resting on the sandy ocean floor. Ethereal, bioluminescent particles floating in the water. Moody, atmospheric lighting with deep navy and teal color tones, accented by sharp, intense spotlights. Photorealistic style, epic scale, high contrast, dramatic shadows, 8k resolution, clean composition, professional aesthetic, no text, no letters, no words.