These terms are the condition for which that code number is to be used. The terms may be synonyms of the code title, or, in the case of other specified codes, the terms are a list of the various conditions assigned to that code.
Physical oceanography, or marine physics, studies the ocean's physical attributes including temperature-salinity structure, mixing, surface waves, internal waves, surface tides, internal tides, and currents.
Oceans are the ultimate bodies of water and refers to the five oceans - Atlantic, Pacific, Arctic, Indian, and Southern. The equator divides the Atlantic Ocean and Pacific Oceans into the North and South Atlantic Ocean and the North and South Pacific Ocean.