1. Coasts

7.7

. 23 May 2022. 43 min

A pregnant Tuarangisaurus is in distress—and her young calf can sense it—as she travels waters that are home to the ocean's deadliest predators.

2. Deserts

7.5

. 24 May 2022. 41 min

Above the deserts of North Africa, aerial combat ensues as male Barbaridactylus pterosaurs fight for the attention of females below.

3. Freshwater

7.4

. 25 May 2022. 40 min

With its feathered body and duck bill, the eight-ton Deinocheirus wades through an Asian wetland in search of relief from pesky biting flies.

4. Ice Worlds

7.4

. 26 May 2022. 42 min

Within the snow-covered forest, a tense standoff develops between ancient rivals, Pachyrhinosaurus and Nanuqsaurus.

5. Forests

7.2

. 27 May 2022. 42 min

A journey through an underground cave in North America turns perilous when a young Triceratops is separated from its mother.