I posted this in the review section, but feel this film deserves mention here, where I haven't seen it discussed. The following is a direct copy from that post:
This was probably the best integration and presentation of 3D that I have seen to date. I bought this Blu Ray 3D when it was released and don't regret it for a second - something I can't say about several other recent purchases. The 3D imagery is never, ever gimmicky or used to "show off". It is simply breathtaking in its execution and there are several moments of truly feeling like you are right there in the wilderness with the animals and their caretakers.
Those looking for in-your-face stunts won't find many of those, but the depth and beauty of this presentation will win them over nonetheless. I simply cannot imagine a better use of 3D in giving a viewer the immediacy of this film, along with an interesting story that parallels two similar women as they devote their lives to these spectacular animals. It's absolutely reference material in my view and shows how 3D can not only add value, but do it seamlessly, without drawing direct attention to itself as the reason for making the film.
"You cannot reason a person out of a position he did not reason himself into in the first place." -Jonathan Swift