It's time to climb on board a submarine and delve below the ocean's surface to meet some of the most beautiful and diverse creatures on Earth: whales. From blue whales, the largest creatures to have ever lived on Earth, to the narwhals that can survive below sea ice, discover more about these amazing creatures in this brilliantly illustrated guide to eight species of whales. Use the handy world map filled with whale hotspots to cross the continents, exploring the diverse habitats where these whales live. See how you size up against the whales with a comparison chart and use the fun fact files to become an expert on these watery wonders!