Think back, if you will, to your elementary school geography ⁤class. Looking at the world map, there are four recognized oceans: the Pacific, Atlantic, Indian, and Arctic.Bing, bang, boom; easy. Not so fast, however, as⁣ scientists have officially recognized a new body of⁢ water as the world’s fifth ocean: the Southern ⁢Ocean.

While the proclamation came⁢ in 2021, the news⁢ remains significant. So, where is this “new” ocean? ‍What’s it⁢ like? Why designate⁤ it now?

What is the Southern Ocean?

The Southern Ocean surrounds Antarctica and is defined ‍by the Antarctic⁤ Circumpolar Current (ACC). This powerful current flows eastward⁤ around the continent, connecting the Pacific, Atlantic, and Indian Oceans.⁣ For decades, the waters around Antarctica were ⁤considered extensions of these three oceans. ⁣However, the unique ‍characteristics of the ACC and the waters it encompasses warranted⁤ separate recognition.

The Southern Ocean is characterized by its cold temperatures, strong winds, and unique marine ecosystems. It plays a‍ crucial role in regulating global climate and ocean circulation. ⁣ The International Hydrographic Organization (IHO) officially‍ recognized the Southern Ocean on June 21, 2021, after years of ⁢debate and research (National Geographic).

why Was It Officially Recognized now?

The decision to formally recognize⁢ the ⁢Southern Ocean wasn’t arbitrary. Scientists have ⁢long⁣ argued for ⁢its distinct identity ⁤based ⁢on several⁣ factors:

• The Antarctic Circumpolar⁤ Current: This ⁣current⁤ is‍ the strongest⁤ ocean current ⁣in the world and acts as a ‍natural boundary, isolating the waters around ‍Antarctica.
• Unique Salinity and Temperature: The ‍waters of the Southern Ocean have a distinct salinity ⁤and temperature profile compared to the surrounding oceans.
• Distinct Ecosystem: The Southern Ocean⁣ supports a unique ecosystem with species adapted to the extreme conditions, ‍including krill, seals, whales, and penguins.
• Increased Focus on Antarctic Conservation: Recognizing the Southern Ocean⁣ as a⁣ distinct entity helps to emphasize the importance of protecting this fragile environment.

The IHO’s decision⁢ followed a proposal submitted by New zealand and Australia, backed by scientific data demonstrating the ocean’s unique characteristics (International Hydrographic Organization).

where Exactly *Is* the southern Ocean?

Defining the precise boundaries of the Southern Ocean has been a point ‍of contention. The IHO ultimately settled on⁤ 60° ⁤South ‍latitude ⁣as the northern limit, extending to the Antarctic continent.‍ However, the boundary isn’t a ⁣straight line; it dips northward in⁢ some areas and ‍follows specific underwater features.