There's a Waterfall Underneath the Ocean — And It Dwarfs Every Waterfall on Land

The largest waterfall on Earth is one you will never see.

Angel Falls in Venezuela drops nearly a kilometer, making it the tallest waterfall on land. But it's a garden fountain compared to what's hiding under the sea.

Beneath the Denmark Strait, between Greenland and Iceland, cold dense water pours over a massive underwater ridge and plunges roughly 3.5 kilometers into the depths.

The volume is staggering — millions of cubic meters of water per second, vastly more than any river cascade on the surface.

It happens because cold, salty water is heavier than warmer water, so it sinks and spills like an invisible avalanche. Earth's greatest waterfall roars in total silence and darkness.