Secrets of Egypt’s Valley of the Whales follows palaeontologists and scientists as they reveal the mystery of whale evolution. How did air-breathing mammals lose their legs and end up in the sea? It’s one of the greatest mysteries of evolution. Using stunning cinematographic footage and interviews shot in Egypt, Dominican Republic, USA and Canada; as well as spectacular CGI and gorgeous underwater imagery of whales, Secrets of Egypt’s Valley of the Whales investigates this central question.