Deep-sea creature, glowing bioluminescent spots, massive bulbous body, long slender tentacles, suckers lined with razor-sharp beaks, piercing red eyes, dark blue-black mottled skin, translucent fins, majestic slow movements, eerie underwater atmosphere, faintly lit abyssal plain, distant sunlight barely penetrating the darkness, mysterious ancient ruins in the background, subtle mist effects, cinematic wide-angle shot, low-key dramatic lighting.