With sea levels rising, the National Geographic Society Tuesday declared the world now has five oceans instead of four.

The National Geographic Society, a nonprofit organization marked World Oceans Day by announcing that the body of water around Antarctica shall now be known as the Southern Ocean.

"The Southern Ocean has long been recognized by scientists, but because there was never agreement internationally, we never officially recognized it," a society geography official, Alex Tait said.

Since the beginning of map creation in the early 1900s, the society only declared the Atlantic Ocean, the Pacific Ocean, the Indian Ocean, and the Arctic Ocean as the Earth's official oceans.

However, the waters that they have now declared the Southern Ocean have usually been seen as part of the Atlantic, Pacific and Indian Oceans.

But, due to the waters' vastness and uniqueness, changes were prompted.