I don't get it.
This seems to be a book people either love or they don't. I read it mostly at work, which maybe contributed to my 'eh' reaction. If I had read it all at once I might have appreciated the writing more?
I kind of wish the book hadn't been framed as the biologist's notebook. There was one moment that made me like the idea, but the rest of the time it didn't really work for me.
I was intrigued enough by the story to start Authority, and I already like it better than I liked Annihilation. I mostly read this book because the movie is coming out soon. It looks like the film is going in a very different direction which I'm pretty excited about.