The camera eyes of 13 different 'Spy Creatures', including Spy Dolphin, Spy Nautilus and Spy Turtle, allow behaviour to be captured that has never been filmed before, including a vast superpod of spinner dolphins hunting huge shoals of lanternfish while dodging the gaping mouths of giant rays.

[Season Finale] Remote-controlled spy creatures reveal dolphins as never before. Meet the orca, king of the dolphins, and discover the intimacy of its remarkable family life. Find dolphins that wear sponges on their noses, and race with the fastest dolphin in the world - the dall's porpoise. Most of the behaviour is filmed for the first time.