Teach about limpets and barnacles as your students make them out of modeling clay. The limpet has a one-piece shell that is like a pointy hat. It is a relative of the snail and has one big foot that it uses to stick to rocks. They move around at night grazing algae off of the rocks. The interesting thing about limpets is that they always go back to the same place after they finish eating. If ... continue reading...