Oceans cover two-thirds of our planet, holding 97 per cent of the earth’s water. But oceans are much more than vast expanses of water. Beneath the deep waters lie mountains and volcanoes. Oceans are teeming with life—both plants and animals. Explore the oceans of the world and learn how they remain full of water, how they influence the climate, the web of life they support, and the dangers posed by pollution and climate change.