Set up a small field with cones on each end. Give each child a soccer ball and line them up on one side of the cones. Tell all the children that they are Nemo and are trying to dribble their ball to the other side. Have one child be Bruce the Shark who tries to steal all of the Nemo's balls. Once Bruce steals a Nemo's ball, Nemo becomes a Bruce. The game is played until all Nemos are turned into Bruces.