In the pitch-black Mariana Trench, an enormous hybrid creature appears—part shark, part octopus, part unknown. Its head is shaped like a monstrous deep-sea shark with elongated jaws and rows of glowing needle-teeth. From its back and sides, long slimy tentacles move independently, covered in pulsing bioluminescent veins. Its skin shifts like liquid shadow. A giant vertical eye opens on its forehead. The creature moves unnaturally fast, twisting its tentacles while gliding through darkness. Horror cinematic, no text.