大灰

A massive, terrifying worm-like creature lurks in a dark underground tunnel. Its slimy, segmented body glistens under dim artificial lights. The creature's enormous, gaping mouth is filled with razor-sharp teeth, resembling a monstrous leech or an alien predator. A group of hazmat-suited scientists or soldiers stand nearby, cautiously observing the beast, their flashlights casting eerie shadows on the damp concrete walls. The atmosphere is ominous and cinematic, evoking a sense of deep-sea horror or sci-fi thriller. Ultra-realistic, highly detailed, photorealistic rendering, cinematic lighting