The Antarctic Ocean is the coldest ocean in the world. Its temperatures reach minus 2 degrees Celsius in what is referred to as the Antarctic bottom water.
The water at the surface of the Antarctic Ocean can be minus 2 degrees Celsius, which is below the zero degrees Celsius freezing point for water, explains the National Oceanic and Atmospheric Administration,. However, due to the high concentration of salt in the seawater, it is still liquid at this temperature.
Oceanographers have found that the Antarctic bottom water supply has been reducing an average of eight million metric tons per second over the past few decades. They argue that this decrease is the result of changes in Earth's climate.