A mythical sea creature, resembling a humanoid entity, with angular facial features and piercing blue skin. Its furrowed brow and sharp, menacing teeth are visible through an open mouth, exuding a sense of foreboding. The creature is set against a vast underwater backdrop, teeming with shadows and light plays. Rendered in stunning 3D with Unreal Engine 4, the scene is enriched by cinematic lighting that captures the ethereal and haunting beauty of the abyssal world.