diver character, Dave, muscular build, dynamic pose, underwater, fighting stance, harpoon gun, boss creature, large octopus, tentacles, rematch scene, coral reef background, sunken ship, treasure chest, bubbles, intense facial expression, neoprene wetsuit, flippers, diving mask, oxygen tank, LED dive light, murky water, action-packed, close-up shot, dramatic lighting, high contrast, 3/4 view, detailed texture, vibrant colors, marine life, suspenseful atmosphere, cinematic angle.