
The exhibit has about a half inch of water all around two model islands and colored sand. There are three rubber barriers that visitors can re-position. A pump forces water in at one end, and the sand builds up in different places depending on where the barriers are placed. My daughter found ways to arrange things so that a whole sand island would rise above the surface of the water.
In addition, the fun is enhanced by two buttons controlling the direction from which the water comes in. The red button mimics a storm of water coming in from the ocean side, and the black button causes water to run up the intra coastal side in the opposite direction. The exhibit is at the perfect height to make it very accessible to small children; and it's a whole lot of fun for everyone!