I know the wind off the ocean pushes the water and makes waves on the beach, but when the wave comes in, what makes it go back out?

Question

I know the wind off the ocean pushes the water and makes waves on the beach, but when the wave comes in, what makes it go back out?

In: Physics

Answer 1

Gravity.

The waves are causing the water to flow in, slightly uphill. When the friction against the land stops them, gravity pulls the water back down the slop into the sea.