The front looks like an aquarium/sea floor (really good CGI). The show is all interactive You call for Crush and he swims up. The idea is that you will learn about turtles and he will learn about humans and especially parenting.
Crush does a good job of getting the audience to participate. He can see the audience and will point out people and talk with them. There is a CM wandering the audience with a microphone and Crush will direct them to the person he wants to talk to. It's fun, entertaining, and worth the wait. Definitely plan to experience it again. Some people are saying this is the future of Disney attractions.