The subject is a colossal, bio-mechanical Leviathan, a serpent-like sea monster, emerging from the inky blackness of an abyssal ocean trench.

Create an ultra-detailed, cinematic 8K masterpiece in the style of dark science-fantasy art. The subject is a colossal, bio-mechanical Leviathan, a serpent-like sea monster, emerging from the inky blackness of an abyssal ocean trench. The creature's body is a seamless fusion of sleek, dark metallic plating and organic, living tissue. A network of vibrant, bioluminescent veins and patterns in shades of electric blue and deep teal pulses with a powerful inner light across its entire length. Its head features an armored crest, and its massive jaws are lined with rows of glowing, crystalline teeth. The Leviathan's own light is the primary source of illumination, casting an ethereal glow on the surrounding deep-sea environment, revealing strange, alien flora and the faint silhouettes of other deep-sea creatures in the murky depths. The overall mood is one of majestic, terrifying beauty and ancient, hidden power.