Earth’s Secret Ocean Is 400 Miles Down?!

Mind = blown. Turns out there’s a hidden ocean stashed 400 miles beneath our feet—like, more water than all the surface oceans combined! It’s trapped in a weird, sponge-like rock called ringwoodite. Scientists only figured this out by studying earthquake shockwaves. Imagine: the planet’s got a whole secret water cycle happening underground. Suddenly, the surface oceans feel a lot less impressive. What else is hiding down there?! #Science #ScienceNews #EarthMysteries