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 Antarctic ozone hole in the ozone layer above allows harmful UV rays to reach the marine habitat, reducing phytoplankton by as much as 15%. The area occupied by the ocean is about 15,558,000 square km, and its coastline extends for 45,389 km. It also hold… The climate variability is due to monsoon wind systems that divide the ocean and causes conflicting weather and temperatures in those regions. The Pacific Ocean is the world’s largest. It covers 71 percent of the Earth’s surface. The rest remains a mystery.Â. 01. of 05. The Pacific Ocean is also home to the Mariana Trench, which is the deepest part of the ocean. Historically, there are four oceans: Atlantic, Pacific, Arctic, and Indian. Overfishing in the waters is also disturbing the marine life in this part of the ocean. 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. A continuous body of water encircling Earth, the World Ocean is divided into a number of principal areas with relatively uninhibited interchange among them. A large number of highly polluted rivers from the countries of southeast Asia and east Asia drain into this ocean, contaminating the waters with pollutants. Frequent oil spills, municipal sewage pollution, industrial pollution, bycatch during irresponsible and outdated fishing activities all threaten the marine life in the Atlantic Ocean. © 2020 Science Trends LLC. There are 5 oceans of the world- the Pacific Ocean, the Indian Ocean, the Atlantic Ocean, the Southern Ocean, and the Arctic Ocean. Choppy seas, storms, and iceberg interventions are common. According to NOAA, there are five ocean basins in the world - Arctic, Atlantic, Indian, Pacific, and Southern. Number Of Oceans In The World (Historically Standard): 4, Number Of Oceans In The World (New IHO Standard): 5, “We are tied to the ocean. The 7 Continents of The World And when we go back to the sea, whether it is to sail or to watch, we are going back from whence we came.” — John F. Kennedy. These plastics affect the ecosystems of numerous species and even make their way back to humans, inside of fishes. Today, the historic “four-ocean” mindset is virtually obsolete, but the National Ocean Service (NOAA) still recognizes four oceanic basins within the Earth’s single Global Ocean. Oceans, covering 70% of the Earth's surface area, are the largest in area in terms of harboring life. Plant life in the Arctic Ocean is scarce except for abundant volumes of phytoplanktons. Oceanographers believe that only 5% of the ocean as a whole has been explored on earth. The area surrounded by the Pacific Ocean … There are 5 major oceans in the world. Historically there were 4 named oceans in the world, which include the Atlantic Ocean, Pacific Ocean, Arctic Ocean, and the Indian Ocean. It is divided into the standard oceans: the Atlantic Ocean, Arctic Ocean, Indian Ocean, Pacific Ocean, and the proposed Southern Ocean and ocean round the Antarctic. Since the year 2000, the International Hydrographic Organization (IHO) started recognizing 5 oceans: Pacific, Atlantic, Indian, Arctic and Southern Ocean. With much left undiscovered and the looming threat of climate change, it is important as ever to build our knowledge of the ocean to better understand the diversity of organisms that exist and how life can proliferate on other oceans in the galaxy. The World Ocean, or global ocean is a term used to define all the world's oceans as one large interconnected ocean. They determined its limits including all water below 60 degrees south, and some of it is frozen, like the Arctic Ocean. Earth Details. Mariana Trench, which is the deepest part of the ocean. However, this ocean has been divided into distinct named geographic regions by countries and oceanographers. Penguins, orcas, whales, seals, colossal squids are some of the most notable species of the Southern Ocean. However, in the relatively shallow waters off the coast of Australia and New Zealand, petroleum and natural gas deposits have been discovered. The world’s ocean is composed of four main bodies of water. The unique ecology and features of this region are sufficient enough, by IHO standards, to give it its own classification. However, although the ocean plays a major role in sustaining life on Earth, we have explored or mapped only about 20% of the ocean. It is the standard classification that is held by National Geographic. Historically speaking, most countries recognize this four-ocean model, which tends to focus on the Pacific, the Atlantic, and the Indian oceans as the major ones. The Arctic is home to the geographic north pole, which has been sought after by many explorers. This represents about 71% of the Earth’s surface. Parts of these oceans are defined as gulfs, seas, straits, and other bodies of water within the oceans. It is the standard classification that is held by National Geographic. Want to know more? Approximately, 80% of the ocean hasn't been … The world map with oceans lets you locate different continents in various parts of the world. The Pacific is the largest of these oceans, covering 63,784,077 sq miles (165,200,000 km²). However, today we recognize 5 oceans in the world, with the Southern Ocean added to the list. According to NOAA, there are five ocean basins in the world - Arctic, Atlantic, Indian, Pacific, and Southern. These are the reasons why we can export goods to other countries and migrate from one country to another by the use of yacht or a boat. How many oceans are there? saltiness comes from evaporation, precipitation, and water flows, DMMS: Efficient Diffeomorphic Metric Image Registration Via Stationary Velocity, Automatic Measurements Of Contact Angle And Curvature In Pore-Space Images, Science Can Now Make Wood Just As Strong As Steel, Free-Living Amoebae – A Novel Waterborne Risk Pathway That Now Includes Enteric Viruses. This interaction leads to a lot of pressure build-up, which leads to earthquakes and volcanoes. Despite this, it is home to breeding humpback whales and the second largest population of tuna. Approximately, 80% of the ocean hasn't been mapped or explored. The melting would also result in the death of numerous species, including polar bears because they would lose their habitats. In addition to these oceans, they also described many other smaller bodies of salt water including seas, bays, and estuaries. Sign up for our science newsletter! 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. For ancient civilisations like Mesopotamian, the answer of how many seas in the world was seven and these also included the oceans which are mentioned above. We use it to search for oil and scientists use it to search for new forms of life and medicines. So, let’s take a look at the huge water bodies of the planet. Petroleum deposits on the Atlantic’s floor, precious stones, placer deposits, and polymetallic nodules are abundant. A large variety of fish like tuna, salmon, swordfish, herring, snapper, etc., abound in parts of the Pacific. This ocean extends from the shores of Antarctica to the line of latitude at 60 degrees South. These include terns, gulls, albatrosses, skuas, petrels, etc. We break that single ocean into parts because the parts contain specific features and characteristics that are definitive to those regions. The Atlantic Ocean has contributed significantly to the economy of many nations. It is also important to understand how humans have affected the health and welfare of the ocean. As any grade-schooler might tell you, Earth has four oceans: the Pacific, the Atlantic, the Indian, and the Arctic. If we contains the ancient oceans there are 19 oceans in the world. These are the Arctic Ocean along the North Pole, the Atlantic Ocean between Europe and the Americas, the Indian Ocean between India and Africa, the Pacific Ocean between Asia and the Americas, and the Southern Ocean on the South Pole. This region is also the home of the ring of fire, which is characterized by immense earthquakes and volcanic activity. That's great to hear! What is the largest ocean in the world? Some estimates suggest that its area is around 155 million square kilometers. Five oceanic divisions are usually defined: Pacific, Atlantic, Indian, Arctic, and Southern; the last two listed are sometimes consolidated into the first three. The Atlantic is also the most active ocean for travel because of its connection to four different continents. 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). Excess of oxygen depleting pollutants triggers hypoxia and creates dead zones in the ocean. Until the year 2000, it was generally accepted that there are four oceans on Earth: the Atlantic, Pacific, Indian, and Arctic Oceans. As we continue to explore and learn about the ocean, it becomes important to understand how it is defined by the world and what features it has that are crucial to the stability of the world. Lions are rather majestic creatures that roam the wilds of Africa, Asia, and zoos. This is a video about How Many Oceans Are There Subscribe for more video http://bit.ly/2Mjf4tw Can VR Be Used To Fix Social Media’s Problems? Overfishing in the Pacific has also depleted its marine wealth greatly. The origin of Earth's oceans is unknown; oceans are thought to have formed in the Hadean eon and may have been the cause for the emergence of life . 
, Researchers estimate that the Southern Ocean seabed is a storehouse of massive oil and gas fields, valuable minerals like gold, placer deposits, manganese nodules, and more. The Southern Ocean is also one of the most dangerous parts of the ocean for ships. As per research, the Arctic might become ice-free by 2040. These oceans are recognized by almost all oceanic organizations around the world. There are 5 oceans: Historically, there are four oceans: Atlantic, Pacific, Arctic, and Indian. We love feedback :-) and want your input on how to make Science Trends even better. Atmosphere Climate Change It is further broken down into the North Atlantic Ocean and the South Atlantic Ocean by the equator. This results in the release of natural gases, organisms, and nutrients that were all trapped in the ice. While there is only one global ocean, the vast body of water that covers 71 percent of the Earth is geographically divided into distinct named regions. It fills the area between the western coastline of the Americas, the eastern coastlines of Asia and Australia, and is capped to the North and South by the Arctic and Antarctic regions. Then there is … The Southern Ocean is home to unique species specially adapted to survive the frigid weather conditions. The Arctic is also home to many fish and animals, including polar bears. Overall, the Indian ocean is the warmest of the oceans and this results in it having a limited marine life. One Earth, there are three major oceans: the Pacific, Atlantic, and Indian oceans. ISSN: 2639-1538 (online). Using this method there are 5 oceans. By Antonia Čirjak on August 19 2020 in Geography, The ocean is a massive body of saline water that covers approximately 72% of the Earth's surface. There is the Atlantic Ocean which separates the American Continents from Europe and Africa. The ocean comprises over 139,434,000 sq mi and has a total volume of 320,000,000 cubic miles. Long hours of darkness engulf the ocean during winters and summers are characterized by continuous daylight. Science Trends is a popular source of science news and education around the world. Geographers, for many years, divided the world ocean into four parts: the Atlantic, Pacific, Indian, and Arctic Oceans. Today, most nations including the United States recognizes five ocean basins, namely Arctic, Atlantic, Indian, Pacific, and Southern. We may one day be able to clean up the messes we have caused from plastics to oil spills. This is because the ocean is comprised of one global and interconnected body of saltwater. How many oceans are there in the world? The icebergs of the Southern Ocean are treated as freshwater resources, sufficient to feed every person on Earth for a period of several months. There is one global ocean called the World Ocean, because the entire body of water on our planet is connected. However, despite this great biodiversity, climate change is taking its toll on the Indian Ocean ecosystem. White lions are an even more captivating […], Although it is almost a given that the DNA that we are all born with does not change throughout our […], Time is a concept that is taken for granted in most areas of human life. This is because tectonic plates below the ocean are colliding with the continental plates along the ridges of the Pacific ocean. Technically, there is only a single ocean: the world ocean. These plastics affect the ecosystems of numerous species and even make their way back to humans, inside of fishes. A large number of migratory birds can be spotted in the oceanic region and Antarctica. | EduRev UPSC Question is disucussed on EduRev Study Group by 195 UPSC Students. This transformation would load the Arctic with large volumes of meltwater and affect the ocean currents prevailing in the region. The other names in seven seas include Red Sea, Mediterranean sea, Arabian Sea, Gulf of Mexico, Caribbean Sea. These are Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean, and the Arctic Ocean. Like other oceans of the world, climate change threatens to adversely affect the marine ecosystem of the Arctic Ocean. Cyclones are common during the summer season. You see, there is only one global ocean on the planet. For many years there were only four oceans officially recognized, and then in the spring of 2000, the International Hydrographic Organization established the Southern Ocean. The Gulf Stream and the North Atlantic Drift are responsible for keeping large parts of the coast of north-western Europe and the British Isles warm when the coast of Newfoundland in Canada on the same latitude experiences extreme temperatures in winter. The Arctic Ocean is the smallest and shallowest of the world’s oceans, and is almost completely surrounded by Eurasia and North America. The ocean houses a plethora of marine organisms ranging from marine microbes to the world's largest animal, the blue whale. We help hundreds of thousands of people every month learn about the world we live in and the latest scientific breakthroughs. The smallest, coldest, and shallowest of the oceans of the world, the Arctic Ocean is located in the Northern Hemisphere’s Arctic north polar region. The depth in this region is 8,047 m. The Indian Ocean region experiences a monsoon type of climate. The Arctic Ocean is located in a polar climatic zone characterized by frigid year-round temperatures. The Eurasian landmass lies to the north of the Indian Ocean, Australia to the east, Africa to the west and the Southern Ocean and Antarctica to the south. Let us learn about each of these seven continents and five oceans that make up our planet earth. We're sorry to hear that! The marine habitat of the Arctic Ocean is a fragile ecosystem that is highly susceptible to slight disruptions in weather. Oceans by size: #1 Pacific (155,557,000 sq km) Unfortunately, the Pacific ocean is home to the largest gathering of plastics that humans have released into the environments. Warm and cold ocean currents in the Atlantic also influence the climate of the coastal areas on the shores of the Atlantic. The deepest point in the Pacific Ocean is the Challenger Deep in the Mariana Trench (10,929 m) located in the western North Pacific.
. Prove you're human, which is bigger, 2 or 8? The surface of the planet is approximately 71% water and contains (5) five oceans, including the Arctic, Atlantic, Indian, Pacific and Southern. The countries bordering the Arctic Ocean are the US, Canada, Iceland, Greenland, Norway, and Russia. March 26, 2010, charm, Leave a comment. Several threats are experienced by the marine inhabitants of the Southern Ocean. Want more Science Trends? The largest region of the Global Ocean, the Pacific Ocean has the Arctic Ocean to the north, the Southern Ocean to the south, Australia, and Asia to the west and the Americas to the east. According to NOAA, there is only one Global Ocean. How Many Oceans Are There in the World? The Atlantic also hosts rich fishing resources with haddock, cod, mackerel, herring being the chief commercially important fish species. The ocean bed also hosts petroleum and natural gas fields, polymetallic nodules, and placer deposits. It is the southernmost of the 5 regions of the Global Ocean and the fourth largest of the five. We have included the details about how many countries are in the world below in this article.. Recently in 2000, the International Hydrographic Organization (IHO) defined a new 5th ocean: The Southern Ocean. These defined areas are further broken down into smaller areas. We break that single ocean into parts because the pa… Despite the ice and cold, humans have managed to live there and even explore. Now we have 7 continents and 5 oceans which are home to all of us and millions of other living organisms. The Atlantic Ocean is bounded by the landmasses of North and South America to the west and Asia and Africa to the east. This process is still going on. Threatened species of whales and walruses inhabit the ocean. Fertilizer and pesticide wash-off from agricultural fields, sewage, and industrial wastes all drain into the ocean via these rivers. The Arctic Ocean is the smallest of the oceans and also the shallowest. The Indian Ocean is the third largest ocean on the planet. Their borders are indicated on the world image (above) in varied shades of blue. The Atlantic, Indian, and Pacific Oceans can be seen as … This new ocean is recognized by the U.S. Board on Geographic Names, but have not been ratified because not all members of the IHO and other countries have accepted this new ocean, which is made up of pieces from the Atlantic, Pacific, and the Indian Ocean. It covers an expanse of about 73,556,000 square kilometers. The remoteness also prevents rescue missions from reaching the ships in need.
. The warm tropical waters of the ocean support a great diversity of life. Unregulated fishing also reduces the fish stock in the ocean which disturbs the food chain and affects the survival of the other species in the chain. The boundaries between these regions have evolved over time for a variety of historical, cultural, geographical, and scientific reasons. The Indian Ocean is the third largest ocean and is home to many climate variabilities. Dec 09,2020 - How many oceans in the world ? The Greenland Sea and the Labrador Sea forms the connection between this ocean and the Atlantic Ocean. The Indian Ocean occupies 70,560,000 square km area on the Earth’s surface. The Atlantic Ocean resides between the Americas, Europe, and Africa. The Pacific Ocean is the largest and deepest of them all, it extends from the Arctic Ocean in the north to the Southern Ocean in the south and is bounded by Asia and Australia in the west and the Americas in the east. The Bering Strait connects the Arctic Ocean to the Pacific Ocean. The world has 5 oceans. All Rights Reserved. 7 continents, 5 Oceans and 194 independent countries in the world are the entire of the physical Universe and all life upon it including human civilization. Historically there are four ocean basins that include the three major oceans and the Arctic Ocean. Ocean currents govern the world's weather and churn a kaleidoscope of life. The IHO proposed this new ocean because Commodore John Leech of the IHO agrees with recent research into global warming and events like El Nino that links them to the southern ocean circulation, which is within the Southern Ocean region. The world ocean is the habitat of 230,000 known species, but because much of it is unexplored, the number of species that exist is much larger, possibly over two million. How many Oceans in the World? Since the Atlantic Ocean is vast, its climate varies widely from the north to the south. 5. The ocean covers about 71% of the surface of the Earth. Though the Southern Ocean does not have a landmass bordering it to the north, it is treated as a separate oceanic division due to the difference in water properties of the ocean south of the 60° S latitude. For normal and dry conditions and temperature […], Schools are usually placed in very noisy environments, where traffic noise is an important issue. Nowadays, it is widely accepted that the Earth has five oceans: the Arctic, Atlantic, Indian, Pacific, and the Southern Ocean. The origin of Earth's oceans remains unknown; oceans are thought to have formed in the Hadean period and may have been the impetus for the emergence of life. The earth is the only planet to have such large masses of water and support life, for 97% of the earth’s water comes from the oceans. We cover everything from solar power cell technology to climate change to cancer research. 3,741 m is the average depth of the Indian Ocean, and its deepest point is Diamantina Deep. The Atlantic Ocean spans an area of 85,133,000 square km. This ocean is also the warmest ocean in the world. However, there is only one Global Ocean. This study has investigated the […], Patients with injuries to the nervous system, such as spinal cord injury, traumatic brain injury, glaucoma, and various neurodegenerative diseases, […], In order to survive a zombie apocalypse, you will need a few key things: enough food rations to last for […]. 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. This is because the ocean is comprised of one global and interconnected body of saltwater. As we continue to explore and understand the ocean, hopefully, we will be able to protect it from the effects of humans. There are five oceans in the world. Rock samples from the ocean have been dated back over 200 million years ago. The ocean covers about 71% of the surface of the Earth. How Many Countries Are There In The World? As per estimates, 97% of the water on our planet is found in the ocean. It supplies us with food and many other resources. Depending on the designation, there are 3, 4, or 5 oceans in the world. As per estimates, 97% of the water on our planet is found in the ocean. Oceans cover up 71 percent of earth's surface and are geographically divided into distinct named regions. Barrow and Prudhoe Bay in Alaska; Churchill, Nanisivik, and Inuvik in Canada; Nuuk in Greenland; Kirkenes, Vardø, and Longyearbyen in Norway; and several ports like Murmansk, Tiksi, and Pevek in Russia, all lie on the Arctic coast. Encircling Antarctica, south of the 60° S latitude, is the Southern Ocean or the Antarctic Ocean. These oceans are recognized by almost all oceanic organizations around the world. Unfortunately, the Pacific ocean is home to the largest gathering of plastics that humans have released into the environments. 7 Continents, 5 Oceans And List Of All Countries In The World. The largest and the deepest ocean on our planet is the Pacific Ocean. Thus, the Indian Ocean offers lucrative fishing grounds and fish, especially tuna and shrimp caught here, are sold to markets across the world. The Arctic Ocean lies to its north, the Southern Ocean to its south, Pacific to the southwest and Indian Ocean to the southeast. Today we recognize 5 oceans commercially important fish species volcanic activity fish and animals, including polar bears they! Change the Pacific ocean and the latest scientific breakthroughs oceans in the ice to form part of the Earth surface... Is characterized by frigid year-round temperatures 168,723,000 square km toll on the Southern ocean some the... 5 % of the coastal areas on the Indian ocean region experiences a monsoon type of climate also home... 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