S01E01 - The Hardest Challenge

S01E02 - In the Grip of the Seasons (Arctic)

S01E03 - Hide and Seek (Forests)

S01E04 - Hunger at Sea (Oceans)

S01E05 - Nowhere to Hide (Plains)

S01E06 - Race Against Time (Coasts)

S01E07 - Living with Predators (Conservation)