After Spinner Shafter catches a cutthroat trout in the Snake River, she and her cousin Alligator search the nearby mountains to determine where the endangered fish came from and how it survived.
When Julie returns to her father's Eskimo village, she struggles to find a way to save her beloved wolves in a changing Arctic world and she falls in love with a young Siberian man.
Rebecca discovers many things about plant and animal life when she spends the day in Teatown Woods in the Hudson Highlands of New York looking for the ovenbird.
Explains how the animal and human inhabitants of the Sonoran Desert of Arizona, including a mountain lion, a roadrunner, a coyote, a tortoise, and members of the Papago Indian tribe, adapt to and survive the desert's merciless heat.