What are the best documentaries available to watch on Tubi TV?

Some of the best documentaries available on Tubi TV include a diverse range of topics that cater to various interests. For history buffs, "The World at War" offers a comprehensive overview of World War II with rare footage and interviews. Nature enthusiasts can delve into "The Secret World of Elephants," which provides an intimate look at these majestic creatures. Music fans might enjoy "Amy," a poignant examination of the life and career of singer Amy Winehouse. "Supersize Me" is another highly acclaimed film, which investigates the fast-food industry in America. "Blackfish," a controversial and thought-provoking documentary, exposes the realities faced by captive orcas in marine parks. All these titles showcase the breadth of riveting and educational content available on Tubi TV for viewers interested in expanding their knowledge and gaining new perspectives through documentary films.