I cut the shells from felt but Dory and Nemo are just clipart. We say:
Dory and Nemo are playing hide & seek!
Is there a fish behind the blue shell?
Let's take a peek!
Then, we repeat it until both fish have been found!
For our craft, I found blue paper fish cutouts in the teacher supply section at Dollar Tree that make perfect Dory's! So inexpensive too! We decorated ours with tissue paper squares and taped a popsicle stick on the back to make a fish puppet.