The World Ocean has a huge and multifaceted impact on the functioning of all Earth systems. It shapes the climate of the planet, is the most important source of oxygen entering the atmosphere, and also regulates the content of carbon dioxide in the air. Global geological and geochemical processes occurring in the aquatic environment of the ocean, as well as on its bottom, have a significant impact on the life of the Earth. The ocean is probably one of the most complex areas on earth. Apparently, this is why people know much less about the ocean than, for example, about the atmosphere or lithosphere. The next book in the series tells about the most exciting secrets of the ocean.