Follow the high-adrenaline adventures of a team of divers as they explore and film the depths of the Amazon river system, home to many of the strangest and fiercest creatures in the world. Led by celebrated wildlife photographers Mike deGruy and Kate Humble, the team goes in search of the biological treasures hidden beneath Amazon's silty surface. What they discover, electric eels, anacondas, wood-eating fish, freshwater dolphins and more, are unlike anything you'd find at the local aquarium..