Dylan Dreyer visits hidden parts of the Caribbean Islands where giant sea turtles lay their eggs; Dominica's boiling thermal lakes; Trinidad's deep scarlet birds; and catches up with hummingbirds.

In Sri Lanka, elephants use the Minneriya tank to their advantage; Yala National Park's spotted deer adapt their bodies and behavior to the tempestuous Sri Lankan climate; gray langurs warn of predators like the ferocious Sri Lankan leopard.