The Mariana Trench — Secrets of the Deepest Place on Earth | Full Documentary

Explore the deepest place on Earth in this full documentary about the Mariana Trench — from the sunlit surface down through the twilight, midnight, abyssal and hadal zones to the Challenger Deep, nearly eleven thousand meters below the waves. Discover hydrothermal vents, ghostly snailfish, the Trieste and James Cameron's solo dive, and the shocking trace of human pollution at the bottom of the world. 🌍 Subscribe to GeoSphere for daily geography documentaries exploring our planet's most incredible places. #MarianaTrench #DeepSea #ChallengerDeep #OceanDocumentary #Geography #EarthScience #GeoSphere #DeepOcean #HadalZone #Underwater