Earth has a newly recognized ocean
The Southern Ocean's latitudinal boundary of 60 degrees south is roughly the same boundary as the Antarctic Circumpolar Current , which, according to National Geographic, brings about colder and less salty water than what is found just north of the region. This current, estimated to be approximately 34 million years old, is what makes the ecology of the Southern Ocean so distinct, providing a unique habitat for thousands of species, National Geographic said in its magazine.
But, National Geographic said that water moving through the ACC is warming, and the society hopes the new recognition will help with conservation efforts. Thesays on its website that the water's temperatures vary between 10 degrees Celsius and -2 degrees Celsius, and that if the Southern Ocean warms just by 2 degrees, it could reduce ice coverage up to 30% in key areas. Penguins, birds and other animals rely on the ice for breeding.
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