Uploaded August 2026 | Updated September 2026, 3 weeks ago
A team of scientists exploring the Mariana Trench sends a deep-water drone nearly seven miles below the ocean's surface. But when the drone records a mysterious sound from Earth's deepest known location, even experts struggle to explain what they're hearing.
A team of scientists exploring the Mariana Trench sends a deep-water drone nearly seven miles below the ocean's surface. But when the drone records a mysterious sound from Earth's deepest known location, even experts struggle to explain what they're hearing.










