The World of WhalesThe World of Whales Die Welt der Wale You already know that whales aren't fish, but did you know they are mammals, just like us humans, who need to hold their breath under water? In The World of Whales we explore many interesting facts about these fantastic animals, looking at the habits and characteristics that make the many species of this family so special. From the stealthy orcas that traverse the seas, to the beautiful songs of humpbacks and the