My aunt loves sci fi books and when I was young, she would tell me the stories. There was one with this sort of plot:
- There was a HUGE spaceship that held 2 exemplars of all species in the entire universe/galaxy, placing them in their natural habitat.
- These species were not aware of the existence of the other aliens or that they were in a spaceship.
- There were 2 humans, I think one was a scientist and the other an athlete. They realize they are inside the spaceship and manage to travel between habitats. I think they end up killing a thing that looks like a giant spider.
- They realize the enormous ship is just a tiny one compared to the mother-ship.
She talks about this with such a fascinated look, because the SIZE of it amazed her so much, but she can't remember the title, or the author. I'd like to find it and give it to her as a gift. I should say this: my aunt sometimes mixes things up, so I wouldn't be surprised if some of it was from a Star Trek episode. But I'd like to know if some of it sounds familiar to someone here. Thank you very much.