We cover everything from solar power cell technology to climate change to cancer research. In part because of the numerous tropical islands of East Asia, the Pacific boasts the longest total shoreline, some 84,300 miles (135,663 km). Humans depend on these teeming waters for comfort and survival, but … The Southern Ocean is home to unique species specially adapted to survive the frigid weather conditions. It is a deep ocean with depth ranging between 4,000 and 5,000 m across most parts. The Atlantic Ocean has contributed significantly to the economy of many nations. Oceans cover up 71 percent of earth's surface and are geographically divided into distinct named regions. The World Ocean is the habitat of 230,000 known species, but because much of it is unexplored, the number of species that exist in the ocean is much larger, possibly over two million. Encircling Antarctica, south of the 60Â° S latitude, is the Southern Ocean or the Antarctic Ocean. The saltiness comes from evaporation, precipitation, and water flows from numerous rivers belonging to the four continents it is surrounded by. We have included the details about how many countries are in the world below in this article.. However, there is only one Global Ocean. The Greenland Sea and the Labrador Sea forms the connection between this ocean and the Atlantic Ocean. There are five oceans in the world. This is because tectonic plates below the ocean are colliding with the continental plates along the ridges of the Pacific ocean. Several threats are experienced by the marine inhabitants of the Southern Ocean. Barrow and Prudhoe Bay in Alaska; Churchill, Nanisivik, and Inuvik in Canada; Nuuk in Greenland; Kirkenes, VardÃ¸, and Longyearbyen in Norway; and several ports like Murmansk, Tiksi, and Pevek in Russia, all lie on the Arctic coast. It is further broken down into the North Atlantic Ocean and the South Atlantic Ocean by the equator. The climate variability is due to monsoon wind systems that divide the ocean and causes conflicting weather and temperatures in those regions. Since the Atlantic Ocean is vast, its climate varies widely from the north to the south. The Atlantic Ocean is bounded by the landmasses of North and South America to the west and Asia and Africa to the east. The Arctic Ocean is the smallest and shallowest of the world’s oceans, and is almost completely surrounded by Eurasia and North America. It is also important to understand how humans have affected the health and welfare of the ocean. The Eurasian landmass lies to the north of the Indian Ocean,Â AustraliaÂ to the east, Africa to the west and the Southern Ocean and Antarctica to the south. Long hours of darkness engulf the ocean during winters and summers are characterized by continuous daylight. ISSN: 2639-1538 (online). One of the most different features from all the other oceans is that the arctic ocean is covered in mountains of ice throughout most of the year. The ocean is one of Earth’s most mysterious places and is crucial to our way of life. The Atlantic Ocean spans an area of 85,133,000 square km. However, if the Atlantic and Pacific Oceans are divided into two separate water bodies each; namely, the North Atlantic, South Atlantic, the North Pacific, and the South Pacific, the number of oceans in the world comes to seven. Ours is not the only ocean in the solar system and the more we understand our own, the better we will be able to approach studying those foreign places. Fertilizer and pesticide wash-off from agricultural fields, sewage, and industrial wastes all drain into the ocean via these rivers. Together, they hold around 97% of the water found on Earth and significantly influence global weather patterns and food supply chains. Large parts of the Pacific remain unexplored due to its great depths. We may one day be able to clean up the messes we have caused from plastics to oil spills. These are Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean, and the Arctic Ocean. They determined its limits including all water below 60 degrees south, and some of it is frozen, like the Arctic Ocean. The average depth of the Atlantic Ocean is 3,646 m and the Milwaukee Deep (8,380 m) in the Puerto Rico Trench, is its deepest known point. There are 5 major oceans in the world. It is the standard classification that is held by National Geographic. The Arctic Ocean has a roughly circular basin that is nearly enclosed by the continental landmasses of North America, Eurasia, Greenland, and several smaller islands. But there are no distinct seven … You see, there is only one global ocean on the planet. The Atlantic is also the most active ocean for travel because of its connection to four different continents. The ocean bed also hosts petroleum and natural gas fields, polymetallic nodules, and placer deposits. The melting would also result in the death of numerous species, including polar bears because they would lose their habitats. The Indian Ocean is the third largest ocean on the planet. This process is still going on. The area occupied by the ocean is about 15,558,000 square km, and its coastline extends for 45,389 km. If you have ever tried to locate the “seven seas” on a map of the world, you probably found only four: the Atlantic, Pacific, Indian, and Arctic Oceans. The marine habitat of the Arctic Ocean is a fragile ecosystem that is highly susceptible to slight disruptions in weather. Now we have 7 continents and 5 oceans which are home to all of us and millions of other living organisms. It is the southernmost of the 5 regions of the Global Ocean and the fourth largest of the five. Ocean currents govern the world's weather and churn a kaleidoscope of life. There are 5 oceans: Historically, there are four oceans: Atlantic, Pacific, Arctic, and Indian. Wildlife Guides Stumble Upon Rare White Lion in South Africa, NASA Confirms: Living Aboard The International Space Station Changed Scott Kelly’s DNA, Mach Speed: From Mach 1 To Mach 3 Speed and Beyond, The Effect Of Outdoor Noise On Italian Schools, Regenerative Abilities In The Mammalian Nervous System, Here’s How To Survive A Zombie Apocalypse, According To Science, 140 million square miles (71% of the Earth’s surface), Â 36,198 feet (11,033 m); the deepest point is the Mariana Trench in the western Pacific, Â Mauna Kea in Hawaii rises 33,474 feet (10,203 m) from its base on the ocean floor, Massive mountain ranges that are 40,000 miles (64,000 km) long. The Indian Ocean occupies 70,560,000 square km area on the Earthâs surface. The Pacific is the largest and oldest of the oceans. These are: Atlantic Ocean, Antarctic Ocean, Arctic Ocean, Indian Ocean, and Pacific Ocean. 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