12/12 Special episode looking at the best encounters Steve and the crew had on their journey.
11/12 Steve walks amongst the largest colony of king penguins in the world.
10/12 Steve and the crew continue their journey south, island-hopping across the Southern Ocean.
9/12 Steve is looking for the number one jungle predator - the jaguar.
8/12 Steve has a chilling encounter with a spider that can reach the size of a dinner plate.
7/12 Steve has a hair-raising encounter when a tiger shark gets a little too friendly.
6/12 Steve meets a shark with a fearsome reputation and swims alongside humpback whales.
5/12 In the crystal clear waters of Guadalupe Island, Steve swims with the great white shark.
4/12 Steve goes fishing for an alligator gar, the largest fresh water fish in North America.
3/12 Steve tracks grey wolves in Yellowstone Park and braves North Carolina's icy rivers.
2/12 Steve Backshall abseils into a glacier and has a close encounter with a humpback whale.
1/12 Steve boards an Arctic icebreaker in search of the Arctic's top predator, the polar bear.