Some species of box jellyfish are very small, but even tiny ones are able to deliver millions of poisonous stings that can stop a grown human's heart! This and other amazing facts about one of the ocean's most powerful predators can be found in this thrilling volume. Readers discover what makes the terrifying yet beautiful box jellyfish one of the deadliest creatures in the sea. Vibrant underwater photographs enhance this reading experience, which supports life science curriculum topics.