Úžasný svet žralokov Séria

"Known as the ballerinas of the sea, blue sharks are long, elegant, and slow moving, but don't let that fool you! While blue sharks are not as aggressive as some other types of sharks, their serrated teeth, long pectoral fins, and teamwork mentality make them just as vicious as their larger relatives. From their ability to sense electromagnetic fields to their excellent vision, blue sharks are fierce predators. There are more blue sharks in the world than any other type of shark, but much of their lives is still a mystery, as they spend most of their time in the vast, open ocean, far from humans"--

Imagine that you're standing on the banks of a river fishing with your family, when suddenly, you see a gray fin poking up through the surface of the water! While this sounds impossible, it does happen. We usually think of sharks as strictly ocean creatures, but nothing could be further from the truth. In this book, you'll learn about how some sharks are able to live in freshwater instead of saltwater, what freshwater sharks eat, where they live, and which types are aggressive towards humans. You'll also learn what to do in the event that you're caught in a freshwater shark attack. Dive in and learn more if you dare!