What is the estimated volume of water that covers the Earth?

33 million cubic miles

330 million cubic miles

33 thousand cubic miles

330 thousand cubic miles

About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water. The volume of the largest sphere, representing all water on, in, and above the Earth, would be about 332,500,000 cubic miles (mi3) (1,386,000,000 cubic kilometers (km3)), and be about 860 miles (about 1,385 kilometers) in diameter.