Ocean-largest body of water forming part of the World Ocean. The surface area of the world ocean, which is composed of the oceans and seas, is about 71% of the surface is heated slowly Zemli.Okean summer, and in winter in the ocean slowly ostyvaet.Zhizn presented abundant and diverse, especially in tropical and subtropical areas between the coasts of Asia and Australia. In ancient Rome, the word Oceanus designated waters around the known world from the west, that is, the open Atlantic Ocean. continuous water shell of the Earth surrounding the continents and islands, and having common salt sostava.Do 74% of the ocean has depth. from 3000 to 6000 m, max. up to 10,924 m.Po modern views, ocean appeared 3.5 billion. years ago as a result of magma degassing and subsequent condensation of vapor atmosphere. Most modern ocean bass. emerged in the last 250 million. years as a result of the split of the ancient superkontinentaKak and the entire universe, the ocean is never left alone