Don't think of this as something you'd see at a zoo with many exhibits to walk through. It is just one large tank, but it is done extremely well. It is immaculately clean and has lots sharks, rays, and colorful fish. The "coral" in the tank is bright and makes the whole thing pop when you look at it.
So I've caught the mermaid show a few times when walking around The Silverton. It was basically some girl in the window waving at kids. Nothing impressive at all.
But last weekend I saw it again and I have to say that it was actually pretty entertaining. The mermaid we saw this time was doing flips and swimming around and playing games with the kids and doing some tricks with bubbles.... She definitely went out of her way to entertain the crowd.
Still, it's nothing to make a special drive to. If you are at The Silverton or Bass Pro, might as well stop by to say you've been. Kids eat it up.