While the film made extensive use of computer generated imagery, many scenes, including ones where Rachel Weisz's character is covered with rats and locusts, were real, using live animals.
I dok je film mnogo koristio kompjuterske efekte, mnoge scene, uključujući i one gdje je lik Rachel Weisz pokriven štakorima i skakavcima, korištene su prave žive životinje.