First broadcast: on BBC One HDLatest broadcast: on BBC Two Northern Ireland HD
Steve Backshall embarks on a global journey from the Arctic Circle to Antarctica. Steve boards an Arctic icebreaker in search of the Arctic's top predator, the polar bear. Show more
First broadcast: on BBC One HDLatest broadcast: on BBC Two Northern Ireland HD
Steve Backshall embarks on a global journey from the Arctic Circle to Antarctica. Steve heads to Texas, investigating another deadly force of nature - tornadoes. Show more
First broadcast: on BBC One HDLatest broadcast: on BBC Two Northern Ireland HD
Steve Backshall's journey from pole to pole continues as the expedition reaches Hawaii. He meets a shark with a fearsome reputation and swims alongside humpback whales. Show more
First broadcast: on BBC One HDLatest broadcast: on BBC Two Northern Ireland HD
Steve Backshall embarks on a global journey from the Arctic Circle to Antarctica. In Alaska, he abseils into a glacier and has a close encounter with a humpback whale. Show more
First broadcast: on BBC One HDLatest broadcast: on BBC Two Northern Ireland HD
Steve Backshall's journey from pole to pole continues, as the expedition reaches the Bahamas. Using the latest technology, Steve reveals the science of a shark bite. Show more
First broadcast: on BBC One HDLatest broadcast: on BBC Two Northern Ireland
Steve Backshall's journey from pole to pole continues. Steve and the crew continue their journey south, island-hopping across the Southern Ocean. Show more
First broadcast: on BBC One Scotland HDLatest broadcast: on BBC Two Northern Ireland
Steve Backshall's journey from pole to pole continues, as the expedition reaches the remote and wild island of South Georgia. Steve gets a chance to swim with penguins. Show more
First broadcast: on BBC One HDLatest broadcast: on BBC Two Northern Ireland HD
Steve Backshall's journey from pole to pole continues, as the expedition reaches the jungles of Guyana. Steve's first find is a feisty two-metre-long snake. Show more
First broadcast: on BBC One Scotland HDLatest broadcast: on BBC Two Wales
Steve Backshall's journey from pole to pole continues, as the expedition reaches Brazil. Steve is looking for the number one jungle predator - the jaguar. Show more
First broadcast: on BBC One HDLatest broadcast: on BBC Two Northern Ireland HD
Steve Backshall embarks on a global journey from the Arctic Circle to Antarctica. Steve tracks grey wolves in Yellowstone National Park and braves North Carolina's icy rivers. Show more
First broadcast: on BBC One HDLatest broadcast: on BBC Two Northern Ireland HD
Steve Backshall's journey from the Arctic Circle to Antarctica continues. In the crystal clear waters of Guadalupe Island, he swims with the feared great white shark. Show more