With a name like "killer whale," you might expect these giant marine animals to be mean and nasty. However, they're not mean at all--and they're not even whales! Readers will enjoy learning how these amazing dolphins hunt for prey and interact with people. Colorful pictures of killer whales in the wild and in aquariums are sure to engage readers of all ages. As readers explore essential life science topics, they also learn fun facts about these animals. They're some of the most playful creatures in the sea--as long as you're not a seal!.