10. Africa: The Serengeti
IMDb rating: 7.4
From harsh and cold Alaska, we travel to warm Africa, precisely a region in Tanzania called the Serengeti. The documentary number 10 in our list of best nature documentaries on Hulu shows the amazing migration of millions of animals, most notably antelopes and birds, who travel to the north once a year in order to mate and feed themselves. Once the plants begin to blossom, these animals once again make the journey south to return to their natural habitat.