Fortunately, there is plenty of water. When photographed from outer space, our beautiful blue planet looks as though it should be called Water, not Earth. Indeed, if the world’s water evenly covered the surface of the planet, it would form a global ocean 1.5 miles [2.5 km] deep. All of the earth’s land surfaces could fit into the Pacific Ocean, with room to spare.

Basically, the total amount of water on earth neither increases nor decreases. Science World states: “The water you use today may have once quenched the thirst of a dinosaur. That’s because all the water we have on Earth now is all we’ve ever had—or will ever have.”

This is because the water in and around the world endlessly circulates—from the oceans to the atmosphere, to the land, into the rivers, and back to the oceans again. It is as the wise man wrote long ago: “All streams run into the sea, yet the sea never overflows; back to the place from which the streams ran they return to run again.”—Ecclesiastes 1:7, New English Bible.