The dolphins frolic in the water. You see what happens on the surface, but what are the dolphins doing underwater? Can you put the whole school on the field? A magnetic travel game in book format. 48 great tasks in different levels of difficulty - ideal for on the go.The dolphins frolic in the water. You see what happens on the surface, but what are the dolphins doing underwater? Can you put the whole school on the field? A magnetic travel game in book format. 48 great tasks in different levels of difficulty - ideal for on the go.