The jungles of the sacred city of Polonnaruwa in Sri Lanka are home to 33 identified troops of toque macaques and one man. This is the extraordinary story of Dr. Wolfgang Dittus, a scientist from the Smithsonian Institution who, over decades, has tracked and documented the lives of thousands of monkeys, revealing a complex society that is in many ways like our own. His journey is captured through his own words, footage he's taken over the course of 50 years, and his interactions with the scrappy, cheeky monkeys he's dedicated his life to.
Three hundred and seventy miles off the coast of Mexico in the eastern Pacific, the waters surrounding Socorro Island are home to some of the world's largest marine life. Take a deep dive through surging currents and majestic coral reefs with whale sharks, giant manta rays, and more.
Attenborough describes the course the Amazon, starting high up in the Andes of Peru, whose streams flow into the great river. Young rivers are by nature vigorous and dangerous: they flow fast and form rapids, thick with mud and sediment.
Snakes have developed the ultimate economy of design and are the most elegant and iconic of hunters. Among the incredible species seen here are blind tiger snakes that hunt using their sense of smell, magnificent African spitting cobras and a bizarre turtle-headed sea-snake hunting on a coral reef. And, for the first time ever, cameras capture a snake ambush in the wild and the beautiful spectacle of yellow anacondas giving birth underwater.
Totalling an estimated 10 million species, the insects and their close relatives are the most abundant and diverse group of animals in the world, so what is the secret of their success? Their hard external skeleton provides strength and protection and their small size allows them to exploit many microhabitats. In Yellowstone, Steve Backshall reveals how teamwork allows a colony of bees to scare off a hungry bear, and in Australia this same teamwork allows a colony of ants to beat the rising tide. But to unlock the real secret of their success Steve visits the Swiss Alps, where an incredible relationship exists between the ant, the wasp and the butterfly.
Visits the world's deepest valley: the Kali Gandaki river in the Himalayas. Its temperatures range from those of the tropics in its lower reaches to that of the poles higher up. It therefore shows how creatures become adapted to living in certain environments.