The Ocean is the heart of the planet. Water covers more than two-thirds of the Earth's surface. Sea plants, like Posidonia, produce 70% of the oxygen we breathe, and the deep waters are home to wildlife and some of the biggest creatures on earth. It provides us with food, jobs, life, entertainment, and sailing!
The ocean is a continuous body of salt water that covers more than 70 percent of the Earth’s surface. Seawater's weight is about 3.5 percent dissolved salt; oceans are also rich in chlorine, magnesium, and calcium. The oceans absorb the sun's heat, transferring it to the atmosphere and distributing it around the world.