"Aroo ah! Aroo ah!" A baby humpback whale is beached on a rocky island and can't get back into the ocean! Diego sets off to save the humpback whale, running through a rainforest obstacle course, then swimming with Tuga the Leatherback Sea Turtle past jellyfish and sharks. When Diego reaches the baby humpback whale, he leads the other humpback whales to make really big waves to lift the beached humpback whale into the ocean and back to his mommy!
- First appearance of Diego's parents
- This is the only episode where Diego's mom is voiced by Olga Merediz.