The ocean formed<span> billions of years ago. </span>Over<span> vast periods of </span>time, our primitiveoceans formed<span>. Water remained a gas until the Earth cooled below 212 degrees Fahrenheit . At this </span>time<span>, about 3.8 billion years ago, the water condensed into rain which filled the basins that are now our </span>oceans<span>. (asteroids too)</span>