The sun heats up the ocean water. This water evaporates into water vapor and rises up into the atmosphere. When droplets gather together, they form clouds. These clouds are made of small water droplets., More droplets, mean bigger and darker clouds. And when the clouds become very heavy with water, they form rain and fall to the earth.
Some rain falls into the ocean and some falls on land.
When the rain falls on the land, the water will form rivers and eventually flow into the sea. Now, I understand you are looking for your mom. Way up here in the sky, we will blow around the world. When you see the ocean she is in, hang on to a cloud and you'll change back to water droplets and fall to earth. So off they blew, travelling around the earth.