What Are They Building in the Lagoon?

At Disneyland. I was there yesterday and I noticed they’d finally started construction on the lagoon where the submarine ride used to be. Any word on what’s going in there?

According to this site, they’re working on a new submarine ride, perhaps with a “Finding Nemo” theme. (page down to “2007 - Submarine Voyage / Finding Nemo - Under Construction”).

And here, I thought that they were building new stars in the Lagoon.