After a baby dolphin is born in the vast ocean, his mother and other dolphins help him as he learns and grows.

"Readers will learn about whales and dolphins--their life cycles, diets, young, habitats, and reasons why they are endangered animals"--Provided by publisher.

"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...