diver character, Dave, male, muscular build, dynamic swimming pose, scuba gear, reflective goggles, wet suit, harpoon gun, action-packed, underwater boss battle, giant octopus, tentacles, ink clouds, coral reef, vibrant marine life, sunken ship backdrop, intense facial expression, bubbles, detailed texture on suit, realistic water effect, chiaroscuro lighting, high contrast, 3/4 view, close-up on action, adrenaline rush, deep sea environment, thrilling atmosphere, cinematic angle.