@orbitexplainedtv: 🌊 We usually imagine waterfalls crashing through the air… But Earth’s largest waterfall is completely invisible from the surface. Hidden between Greenland and Iceland, this underwater giant has been flowing for thousands of years, yet ships can sail directly above it without ever knowing it’s there. 🌍 It exists because cold, dense seawater sinks beneath warmer, lighter water, creating an enormous underwater cascade unlike anything found on land. 🤯 It reminds us that we’ve explored more of the Moon than our own oceans. How many other incredible places are still waiting to be discovered beneath the waves? 📤 Share this with someone who thinks they’ve heard every amazing Earth fact. #earth #ocean #waterfall #Science #nature