·An entertaining way to educate young children about dolphins through vibrant illustrations and pop-up characters. ·Features 10 pop-up designs of dolphins along with a variety of fun facts about their lives, such as how they use biosonar to help them navigate their surroundings, how they each have their own unique whistles to help them recognize their family and friends, and there are both saltwater and freshwater breeds of dolphins. ·Hi-quality hardcover design.