From a purely and oceanographic perspective, there is only one global ocean . All of Earth’s marine waters are interconnected, forming a single continuous body of salt water that covers approximately 71% of the planet’s surface. This "World Ocean" is critical for regulating global climate , distributing heat, and supporting life. However, for ease of navigation, study, and mapping, this massive body is traditionally divided into distinct named regions. The Traditional Four
The creates a distinct ecological and biological boundary around the continent of Antarctica. Because the water within this current is colder and less salty than the waters to the north, scientists argued it deserved its own classification. In 2021 , the National Geographic Society officially recognized the Southern Ocean, bringing the total to five . Differing Perspectives how many oceans are there
The second largest, separating the Americas from Europe and Africa. From a purely and oceanographic perspective, there is
In recent decades, the (also known as the Antarctic Ocean) has officially joined the list. Unlike the other oceans, which are defined by landmasses, the Southern Ocean is defined by a current . However, for ease of navigation, study, and mapping,
The smallest and shallowest, centered around the North Pole. The Emergence of the Fifth Ocean
Located between Africa, Asia, and Australia, known for its warm tropical waters.