mechanical shark, giant size, metallic texture, sharp teeth, aggressive posture, underwater scene, ocean depths, coral reefs, sunken ship, dynamic action, steel grey color, riveted joints, hydraulic mechanisms, menacing eyes, robotic fins, advanced weaponry, torpedo launchers, LED lights, murky water, bubbles, marine life, close-up shot, dramatic lighting, high contrast, cinematic angle, wide lens, science fiction theme, futuristic design.