Drain the Oceans is a documentary series on National Geographic that uses advanced underwater scanning technology to reveal secrets hidden beneath the world’s oceans, lakes, and rivers. In season 6, viewers travel across the globe as experts uncover shipwrecks, lost cities, and forgotten treasures buried under water for centuries. Each episode combines scientific research with historical storytelling to bring these submerged mysteries to life. Season 6 explores everything from sunken warships of World War II to ancient ruins swallowed by rising seas. The show features interviews with archaeologists and marine scientists who explain how these discoveries change our understanding of history. If you’re fascinated by exploration or maritime legends, this season offers plenty of excitement—season 6 ended on April 09, 2023 sign up for a reminder.