Day of the Cayman

S1 E1: Unblinking red eyes glide along the silent black surface of the tropical river like faintly glowing embers in the dusk. Up to seven meters long and weighing more than a ton, the black caiman is probably the largest predator of the Americas and most certainly the least studied. Rainer Bergmaz travels to the heart of Guyana's Hinterland to find the shy and rare reptile.