How Does the Ocean Stay So Deep and Stable?

Imagine the ocean like a giant, never-ending bathtub that’s filled with water and kept steady by Earth's gravity. The more water there is on top of something, the heavier it feels, just like stacking blocks in a tower. This pressure from above keeps everything calm deep below the surface. Even when waves crash or storms roll in, they don’t really reach all the way to the ocean floor.

The water gets deeper and deeper, but gravity pulls it down hard enough that it doesn’t move around much, like a blanket of water that stays still even though the top is moving.