OK, so we all know that Na’vi are ridiculously anthropomorphic, especially in the context of the rest of their ecosystem. However, that ecosystem is actually very interesting. My guess is that the suits in Hollywood got all bent out of shape about how the audience had to be able to identify with the Na’vi, but couldn’t care less about the animals and plants. So Cameron’s team got to play with real science. Peggy Kolm has a round-up of blog posts about it.