The premise of the program is that sharks can be brought into a state of tonic immobility by flipping them on their back, and that this characteristic might explain how a supposed series of Great white shark killings occurred.
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.