Initially, Humans acquired information of the waves and currents of the seas and oceans in pre-historic times. Despite all this, human knowledge of the oceans remained restricted to the topmost few fathoms of the water and a small amount of the bottom, primarily in shallow areas. Oceanography, otherwise called oceanology, which covers an extensive variety of subjects, including biological aspects of the ocean. It is associated with the Earth science, which covers a wide range of topics, including ecosystem dynamicsocean currents, waves, and geophysical fluid dynamicsplate tectonics and the geology of the sea floor; and fluxes of assorted chemical substances and physical properties within the ocean and over its breaking points.