Most of what I could say about this episode would boil down to, "Ooo, Sexy Nako. Ohana makes funny faces."I think the message overall was that she didn't need to be one or the other. It's perfectly fine for her to act in two different ways. She's still Nako both times. The whole mermaid analogy doesn't really compare to that well though, other than her love of swimming, I'm not sure why they used it.