Steve and the team head to the remote island of Isla del Plata which has the largest congregation of giant manta rays in the world. Working with one of the world's top manta scientists, Steve heads off to try and dive with these majestic giants.
The rainforests of Ecuador are some of the most diverse on earth. Brimming with all kinds of unique and weird species that are found nowhere else, and some of the most deadly animals on earth lurking in the shadows.
Steve gets strangled by a python on a night-time river expedition, climbs a 40-metre tree and finds out why our thirst for palm oil is threatening bears and orangutans.
Steve and the crew travel 4,000 miles to the Loango National Park in Gabon. Steve heads out into Loango's maze of rivers on a mission to try and find an animal that is critically endangered but packs a mighty punch, the western lowland gorilla.
A look back at some of the best moments from the series. Steve races a cheetah, rescues a king cobra and shares some of those rare times when things go wrong.