Comparative anatomist Joy Reidenberg explains how majestic whales "fart with their face" (a process more formally known as echolocation) to send their unique sounds through the water. [6:24]

Great interactive site for elementary and middle school students. Learn about the order cetaceans, mysticetes, odontocetes, (baleen whales and toothed whales) and bottlenose dolphins. Then play some interactive games after learning about...