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  • 9 minutes ago
What if we told you that river-like currents flow across the ocean floor hundreds of miles beneath the surface?

These aren't ordinary rivers. They're turbidity currents—dense mixtures of sediment and seawater that can plunge down continental slopes and race across the seafloor.

Over immense periods of time, these flows can carve enormous underwater channels and canyons.

The deep ocean contains a hidden landscape that resembles the world we see on land: rivers, waterfalls, valleys, and canyons.

And most of it remains invisible to us.

🌊 The deeper we look, the stranger our planet becomes.
Transcript
00:00Did you know Earth has rivers flowing underneath the ocean?
00:04They aren't made of water. They're made of mud.
00:08When sand and sediment build up on the edge of the continent, it can suddenly collapse.
00:14That mixture of sediment and seawater becomes incredibly dense and heavy,
00:19much heavier than the clear water around it.
00:21So it sinks and starts to flow.
00:24Scientists call them turbidity currents, and they don't just trickle.
00:29These underwater rivers can travel for hundreds of miles at speeds up to 5 miles per hour,
00:35carving gigantic canyons in the seafloor.
00:38In fact, some of these underwater channels are bigger than the Grand Canyon.
00:44The Congo River has one that stretches for over 700 miles deep into the Atlantic.
00:49We live on a planet where even the ocean floor has rivers, waterfalls, and canyons.
00:56We just can't see them.

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