Hidden cameras head into the heart of the dolphins' world, offering the chance to encounter these magical creatures up close. The camera eyes of thirteen different 'Spy Creatures', including Spy Dolphin, Spy Nautilus and Spy Turtle, allow behavior to be captured, including a vast superpod of spinner dolphins hunting huge shoals of lanternfish while dodging the gaping mouths of giant rays.

Meet the orca, king of the dolphins, and discover the intimacy of its remarkable family life. Then encounter dolphins that wear sponges on their noses, while elsewhere race alongside Dall's porpoise, the fastest dolphin in the world. Elsewhere, a young bottlenose begins a life on his own joined by Spy Baby, a cute porpoise-shaped camera that has bubble conversations with real dolphins!