Sigourney Weaver guides viewers on a journey to the heart of whale culture to experience the extraordinary communication skills and intricate social structures of five different whale species. With the help of new science and technology, viewers witness whales making lifelong friendships, teaching clan heritage and traditions to their young and grieving deeply for the loss of loved ones.

Cast:Sigourney Weaver, James Cameron, Brian Skerry,

Genre:Documentary,

country:United States of America,

Production:National Geographic, Red Rock Films,