E1 - Coasts

Aired: May 23, 2022

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.

E2 - Deserts

Aired: May 24, 2022

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

E3 - Freshwater

Aired: May 25, 2022

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

E4 - Ice Worlds

Aired: May 26, 2022

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

E5 - Forests

Aired: May 27, 2022

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