Electric Amazon

The Amazon is one of the wildest and least explored parts of the planet. Encompassing 6 countries and 2 million square miles of forest, river and floodplain, it has the highest diversity of life on the planet, but what lies below it is truly shocking. In its deep muddy rivers, clear streams and expansive floodplains a freak-show of fish life has exploded, with some of the strangest shapes and weirdest adaptations on Earth. Hiding in the vast rivers and streams is an electric grid, a bizarre community of fish with a highly sophisticated elect...

Africa's Piranha

The plains of Africa have always been a hotbed of predator action, but lurking in its rivers is perhaps its most elusive killer: the Goliath tigerfish. Legends say they are man-eaters, that even crocodiles fear them. Locals call them "demon fish" but angling legend Andy Coetzee calls them something else: an obsession. He dives into the predator-infested Okavango Delta and the treacherous Congo River on a mission to finally land what is considered to be the hardest fish in the world to catch.