2. The scientific study of all aspects of the world's oceans: Oceanography includes the physical and chemical properties, biology (plants and animals), or life forms, the geological framework, and physical processes, such as the motion of ocean waters.
Physical oceanography normally includes the study of water properties, such as temperature, salinity, density and pressure, and the transmission of electrical, optical, and acoustical stimuli in the oceans.
Biological oceanography applies to the study of all flora and fauna and their ecological adjustments and life cycles in the oceans. Geological oceanography is also concerned with the character of the ocean basins and their rocks and marine sediments.