How many oceans are there in the world

" " As you can see from this map, most of our planet is covered in water that we have divided into five named oceans. BlueRingMedia/Shutterstock Planet Earth, when viewed from space, has been described as a "blue marble." This is, of course, because it's covered in water. Our planet sustains life partially thanks to the Oceans make up Humans have gotten into the habit of separating the one big, continuous, mysterious body of water that covers the globe into principle sectors that we call oceans. Historically, there were just four oceans, but we now recognize five different oceans: the Pacific Ocean, Atlantic Ocean, Arctic Ocean, Indian Ocean, and the recently added fifth ocean, the Southern Ocean. The Atlantic, Indian and Pacific freeze together around Antarctica. There are no real barriers between the world's oceans like there are with landmasses, mostly because bodies of water are often what we use to create geographical boundaries. Just like an island's borders are drawn by water, continents mostly use oceans to describe their boundaries. There is only one global ocean, and yet we have to make distinctions between areas, for geography's sake. So, although the Atlantic Ocean isn't technically a separate body of water from the Pacific Ocean, people call the Drake Passage — the narrow keyhole of water between Antarctica and Cape Horn at the tip of South America — the boundary between the two oceans. Although you might find videos online purporting to prove the waters of Th...

The phrase “the Seven Seas” has been around for centuries, but that term really refers to different parts of the ocean and several other large bodies of water. There are actually more than seven seas in the world. But what makes a sea different from other bodies of water? That is not an easy question to answer, because the definition of a sea leaves some room for interpretation. In general, a sea is defined as a portion of the ocean that is partly surrounded by land. Given that definition, there are about 50 seas around the world. But that number includes water bodies not always thought of as seas, such as the Gulf of Mexico and the Hudson Bay. Moreover, in some cases, a sea is completely landlocked. The Caspian Sea is the most famous example, though this sea, which lies between Russia and Iran, is also referred to as the world’s largest lake. Other seas surrounded by land include the Aral Sea and the Dead Sea. They contain saltwater and have been called seas for many years, but many oceanographers and geographers are more inclined to call them lakes. Still, that leaves dozens of water bodies that fit the traditional definition of a sea, even though they can be quite different from one another. A sea can be more than 2.6 million square kilometers (1 million square miles) in area, such as the Caribbean Sea. Or, it can be as tiny as the Sea of Marmara, which is less than 12,950 square kilometers (5,000 square miles) in area. This tiny Turkish sea connects the Aegean Sea and ...

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“We think it’s really important from an educational standpoint, as well as from a map-labeling standpoint, to bring attention to the Southern Ocean as a fifth ocean,” Tait said. “So when students learn about parts of the ocean world, they learn it’s an interconnected ocean, and they learn there’s these regions called oceans that are really important, and there’s a distinct one in the icy waters around Antarctica.” The Southern Ocean, Sala wrote, “contains areas that are warming the fastest on Earth, such as the Antarctic Peninsula.” The sea ice on the Southern Ocean plays a role in determining ocean circulation and weather patterns, and further warming of the ocean could “disrupt the global climate,” Sala said.

The ocean is a huge body of saltwater that covers about 71 percent of Earth’s surface. The planet has one global ocean, though oceanographers and the countries of the world have traditionally divided it into four distinct regions: the Pacific, Atlantic, Indian, and Arctic oceans. Beginning in the 20th century, some oceanographers labeled the seas around Antarctica the Southern Ocean, and in 2021 National Geographic officially recognized this fifth ocean. The ocean is a huge body of saltwater that covers about 71 percent of Earth’s surface. The planet has one global ocean, though oceanographers and the countries of the world have traditionally divided it into four distinct regions: the Pacific, Atlantic, Indian, and Arctic oceans. Beginning in the 20th century, some oceanographers labeled the seas around Antarctica the Southern Ocean, and in 2021 National Geographic officially recognized this fifth ocean. An estimated 97 percent of the world’s water is found in the ocean. Because of this, the ocean has considerable impact on weather, temperature, and the food supply of humans and other organisms. Despite its size and impact on the lives of every organism on Earth, the ocean remains a mystery. More than 80 percent of the ocean has never been mapped, explored, or even seen by humans. A far greater percentage of the surfaces of the moon and the planet Mars has been mapped and studied than of our own ocean floor. Although there is much more to learn, oceanographers have already...

Quick Quiz: This Land Is Your Land The continents are not distributed evenly over the surface of the globe. If a hemisphere map centred in northwestern Europe is drawn, most of the world’s land area can be seen to lie within that hemisphere. More than two-thirds of the The distribution of the continental platforms and tetrahedral (four-faced) theory, in which a cooling earth assumes the shape of a tetrahedron by spherical collapse; (2) the convection-current theory, in which convection currents in the Earth’s interior dragged the crust to cause folding and

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Meaning And Origin The notion of the "Seven Seas" is often associated with pirates in popular culture today. Today, the “Seven Seas” concept is often linked to pirates and their ventures, with pirates in popular culture referring to “sailing the seven seas.” In various past and present cultures, the Seven Seas referred to regional water bodies, exotic water bodies, or water bodies used as trade routes. However, the origin of the phrase “Seven Seas” is not well-known, although popular references point to the pieces of literature dating back several centuries. The phrase was popular in Chinese, Hindu, Ancient Usage In some cultures, the Seven Seas represented the various trade routes within their reach. Others used the phrase to refer to any known seas, bays, gulfs, and parts of oceans they had access to. In yet other cultures, it referred to waterways that were distant and strange. Moreover, the word “seas” was also used to refer to the seas that never existed. Thus, there has never been a universal list or meaning of the Seven Seas. According to the Arabs and their neighbors, the Seven Seas were water bodies to the East that facilitated their voyage, trade, and spread of Islam. These seas included the From the 19th century to today, the phrase "Seven Seas" has been used to refer to the world's oceans. In the early modern days, the phrase referred to the four traditional oceans, Atlantic, Arctic, Indian, Pacific Oceans, alongside the Gulf of Mexico, the Mediterranean, and t...