Two players are designated as sharks and stand in a small marked area in the center of the room. All other players are divided up into groups of different types of fish and can either all stand in the same place or in different group bases. The leader then calls outs the names of the fish and players who have that name have to run around the sharks in the middle before coming back to base. If the leader calls out ‘sharks’ the 2 sharks leave their circle and try to catch any players running around. Those caught are out.