They have done a really good job with this space. It's engaging, very interactive and educational, if you like bugs. The interactive, motion movie is like ones you've seen at certain other amusement parks and it's cute for the kids. The butterfly exhibit is smaller than we've seen in other places, but it's understandable given the space. The Japanese garden touches in it are nice.
Be very aware of your timing. The venue closes at 5:00 pm sharp and entry is barred after 4:00 pm. They enforce the times quite strongly. It is a very easy and quick walk from the Aquarium, so just be sure to leave there around 3:30 pm or so if you're going to finish the day here.