Sharks and dolphins both have torpedo-shaped bodies with fins on their backs. They slice through the water to grab their prey with sharp teeth. But despite their similarities, sharks and dolphins belong to different animal classes: one is a fish and gets oxygen from the water and the other is a mammal and gets oxygen from the air. Marine educator Kevin Kurtz guides early readers to compare and contrast these ocean predators through stunning photographs and simple, nonfiction text. "Topics addressed include where they are found, types of each, fish versus mammal, body characteristics, and what and how they eat. Backmatter instructs readers on reading and making a Venn diagram and asks them to put a food web in the proper order and identify shark and dolphin body parts.- Kirkus Reviews Kevin Kurtz is the author of A Day in the Salt Marsh, A Day on the Mountain and A Day in the Deep. He has loved science, nature, and books since he was a kid. As an adult, he has worked as an educator for organizations such as the South Carolina Aquarium and the Science Factory Children s Museum, and also onboard the research ship the JOIDES Resolution during an expedition in the South Pacific. Kevin currently lives in upstate New York, where he continues to write and visit schools to teach children about the wonders of nature.