12. March of the Penguins
IMDb Rating: 7.6
We are continuing our list of best nature documentaries on YouTube with this amazing documentary that follows the Antarctica’s emperor penguins in their yearly attempt to find a mate. Each year, penguins that are 5 or more years old leave the ocean (their natural habitat) and embark on a journey to the breeding grounds of their ancestors in their attempt to find a mate. After they find a mate and the chick is hatched, they make long journeys back to the ocean and again to the breeding place in order to feed their young. If you are sick of Hollywood love stories, maybe this one will be refreshing.