Discover why the Killer Whales' movements makes them so difficult to study in the wild.Nature's Children series provides young readers (Ages 8-10) with fascinating information about the planet's most incredible wildlife species. Each title offers a complete picture of the animal- from birth to adulthood- and describes its place in our world, including how humans impact it and its environment. Thanks to marine parks and zoos, many people around the world are familiar with the incredible abilities of killer whales. However, these aquatic hunters are far more than just entertaining performers. Readers will discover how killer whales work together to hunt for prey, and why their bodies make them so good at swimming,