Dylan Dreyer travels to the Zanzibar Archipelago off the coast of East Africa to explore lush beaches and beautiful reefs full of exotic mammals, crustaceans and fish, from the small fiddler crabs on Chumbe Island to the massive whale sharks.

Dylan Dreyer explores South America's Andes Mountains where the tumultuous weather and treacherous heights cause many unusual animals to form specialized behaviors in order to survive; plus what life is like for the descendants of the Incas.