They are the most iconic animals on Earth—whales and birds of prey, ferocious crocodiles and magnificent elephants. To see them is to marvel—and to ask a surprisingly challenging question: Where did these amazing creatures come from? When Whales Walked: Journeys in Deep Time takes us on a global adventure to find the answer. Starting today, with awe-inspiring animals from Vancouver to Madagascar, we travel millions of years into the past to unravel their ancient stories. Each of these iconic creatures has an extraordinary lineage—a story full of twists and turns, punctuated by dramatic events in Earth’s history. Along the way we’ll meet an extraordinary cast of ancient characters, from tiny elephants to crocs that would dwarf any reptile alive today to a whale ancestor that walked on four legs.