Introduction
As you read this book, click on the coaches down on the bottom. They will ask you questions or tell you more about what you just read. Some pages also have a Response Area, where there is a question and a place for you to type in your answers.
There are 43 different dolphin species . Thirty-eight of these species are oceanic dolphins and five are river dolphins. Dolphins are not fish; they are actually mammals like us. This means that they are warm-blooded, give birth to live young, and nurse their young. Because they are mammals, they cannot breathe under water and have to go to the surface two or three times a minute to breathe. Dolphins travel in pods containing anywhere between five to several hundred dolphins.
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