When Whales Walked: Journeys in Deep Time

Discover the evolutionary secrets of some of the world's most majestic creatures. From voracious crocodiles and acrobatic birds to stupendous whales and majestic elephants, When Whales Walked: Journeys in Deep Time follows top scientists on a global adventure as they follow clues from the fossil record and change what we thought we knew about the evolution of iconic beasts.