"I never did see the whole thing, but I wouldn't be surprised if it were twenty kilometers long. It's just a big, long tube with a hole at both ends as wide as the whole damn worm. It's segmented, and the body looks hard, like an armadillo shell. It's got a mouth like a buzz saw, teeth on the inside and outside both. It spends its time under the sand, but sometimes it isn't deep enough and it has to come to the surface. We watched it in one of those times."

"There was a worm like that in a book", Bill said.

"A movie too," Cirocco said, "it was called Dune."

So there's another quote, right from the book.

--
Evan