Our planet Earth is known for its abundance of water. Ninety-seven percent of all water on Earth is found in the oceans. Oceans are large, salty bodies of water that are home to millions of marine organisms and animals. Five oceans cover 71% of Earth's total land area. They play a vital role in all known life, participate in the carbon cycle, and influence climate and weather patterns. Oceanography is the science of the oceans, and oceanographers have divided the oceans into distinct zones based on biological and physical conditions. It is said that we know much more about space than we do about the oceans. Therefore, these vast blue-green bodies of water hide many mysteries. Here are ten little-known facts about the Earth's oceans.
1. Phytoplankton, single-celled plants that live on the ocean's surface, provide half the world's oxygen, not trees.
Phytoplankton, single-celled ocean plants, are at the core of the ocean's biological productivity. Biological productivity is the ability of bodies of water to support life. Phytoplankton use solar energy to convert carbon dioxide into complex organic compounds, which form new plant material. The food chain begins with phytoplankton. Marine herbivores feed on phytoplankton. Predators, such as sharks and whales, feed on herbivores. Phytoplankton require two essential elements to survive: solar energy and nutrients from the water. Through photosynthesis, phytoplankton release oxygen, which accounts for half of all oxygen on Earth. (source)
2. The Pacific Ocean is the deepest ocean, with an average depth of 3.9 miles.
The Pacific Ocean, the world's largest body of water, covers an area of 179 million square kilometers, twice the size of the Atlantic Ocean. The deepest point on Earth, the Mariana Trench, is located in the Pacific Ocean. The average depth of the Pacific Ocean is 3.9 miles, significantly greater than the average depth of all other oceans, which is 2.29 miles. The Pacific Ocean contains more islands than all other oceans combined. Furthermore, the volume of water in the Pacific Ocean accounts for 501 TP3T of the total volume of all the oceans on Earth. (source)
3. The water pressure at the deepest point of the ocean, the Mariana Trench, is over eight tons per square inch (703 kilograms per square meter). This is equivalent to the pressure exerted on you by 50 jumbo jets.
Researchers took a sample from the Challenger Deep in the Mariana Trench, the deepest point in the ocean, located at a depth of 36,201 feet (11,034 meters). The soil there was saturated with single-celled organisms called foraminifera, which are considered the earliest form of life. According to the study, the water pressure in the Challenger Deep is more than eight tons per square inch (703 kilograms per square meter). For comparison, this pressure is equivalent to the pressure of 50 airplanes lying on top of you. The Mariana Trench is home to hydrothermal vents that bubble sulfur and carbon dioxide, active volcanoes, and marine life adapted to pressures 1,000 times greater than sea level. (source)
4. Ninety-nine percent of the living space on Earth is occupied by oceans.
The oceans are home to the majority of living things on Earth. The oceans contain over 971 TP3T of all the water on Earth, and the ratio of water to land on our planet is 7:3. Interestingly, the oceans account for 991 TP3T of all living space on Earth. In 1986, biologists identified a new, thirty-third largest group, or phylum, of animals: loriciferans. These are microscopic creatures that live between grains of sand. The oceans are home to several different types of marine fungi, blue-green algae, and bacteria. They are also home to a variety of unique and fascinating marine animals. (source)
5. The Pacific Ring of Fire is a region in the Pacific Ocean basin that contains 751,000 active and dormant volcanoes worldwide. Additionally, 901,000 earthquakes worldwide occur within the Ring of Fire.
The Pacific Ring of Fire, an arc along the Pacific Ocean basin, is home to numerous earthquakes and volcanic eruptions. It comprises 452 volcanoes, accounting for more than 751 of the world's active and dormant volcanoes. All but three of the world's 25 largest volcanic eruptions over the past 11,700 years have occurred at volcanoes located within the Ring of Fire. Approximately 901 of the world's earthquakes occur within the Ring of Fire. Furthermore, 811 of the most destructive earthquakes occur here. (source)
6. The Mariana Trench is home to many bizarre deep-sea creatures.
The Mariana Trench is a crescent-shaped trench in the Earth's crust where the Pacific Plate collides and subducts beneath the Philippine Plate. The Mariana Trench is 1,500 miles long. A NOAA vessel Okeanos Explorer , The USS Ocean Research Ship (USORS), or USS Ocean Research Ship, is the only federally funded US vessel dedicated exclusively to ocean exploration. It produces images using multibeam sonar, which is used to understand and protect marine life. The resulting images reveal a variety of fascinating creatures, such as fangfish, frilled sharks, vampire squid, catfish, vipers, and more. (source)
Fish with fangs
The fangfish is one of the deepest-sea fish on the planet. It gets its name from its extremely large teeth, which seem disproportionate to its 15-centimeter body. It lives at depths of over 5,000 meters. The pressure at this depth is 50 times greater than on land.
Vampire squid
The vampire squid, named for its dark, membranous tentacles that can cover its entire body, lives at depths of up to 3,000 meters. Its eye-to-body ratio is the largest of any creature on the planet. Its gelatinous body is six inches long. Furthermore, it can survive in low-oxygen conditions.
Frilled shark
The frilled shark has 300 trident-shaped teeth, neatly arranged in 25 rows. This prehistoric shark species was first discovered between 1879 and 1881. It also inhabits depths of up to 1,570 meters. Its name comes from its frill-like appearance. The gestation period for this shark can last up to three and a half years, the longest of any vertebrate.
7. The Mid-Ocean Ridge, the longest mountain range in the world, is located on the ocean floor and stretches for more than 40,390 miles (65,000 kilometers).
The Mid-Ocean Ridge is the longest mountain range in the world, stretching over 40,389 miles. The movement of Earth's tectonic plates creates this system of mountains and valleys. Furthermore, over 901 TP3T of the Mid-Ocean Ridge is underwater. Furthermore, the Mid-Ocean Ridge consists of thousands of individual volcanoes or volcanic ridge segments that periodically erupt. The movement of tectonic plates constantly resurfaces the Earth's surface. (source)
8. Point Nemo in the South Pacific Ocean, located more than 1,600 kilometers from the nearest coast, is so remote that the nearest humans are on the International Space Station at an altitude of 400 kilometers.
Point Nemo is located at 48°52.6′ south latitude and 123°23.6′ west longitude and is considered the most remote point on Earth. Translated from Latin, "nemo" means "no man." It is more than 1,000 miles from the nearest land. The distance to the nearest land is so great that the closest humans to Point Nemo would be at an altitude of 248.5 miles on the International Space Station. In 1992, Croatian-Canadian geodetic engineer Hrvoje Lukatela used geospatial software to find Point Nemo. It is also known as the "oceanic pole of inaccessibility.". (source)
9. When a whale dies, its skeleton falls into the abyssal or bathyal zone of the ocean. This allows a complex local ecosystem of deep-sea organisms to survive for decades. This is called a "whale fall.".
«A "whale fall" is the fall of a whale carcass into the abyssal or bathyal zone, located more than 1,000 meters below the ocean's surface. A whale fall can create a complex ecosystem and provide a food source for animals such as shrimp, crustaceans, lobsters, isopods, crabs, and other deep-sea organisms for decades. Whale falls can occur in the deep open ocean due to low temperatures and high hydrostatic pressure. However, in shallow waters, whale carcasses are consumed by scavengers. The first discovery of a whale fall occurred in the 1970s. (source)
10. The Great White Shark Cafe is an area in the central Pacific Ocean where sharks swim and linger for seemingly no apparent reason. Surprisingly, the sharks come to this spot despite the scarcity of food in the area.
«The "White Shark Cafe" is an area in the central Pacific Ocean that is home to great white sharks in winter and spring. The radius of this zone is approximately 250 kilometers (160 miles). Food for the animals is very scarce in this area. Furthermore, researchers describe it as a shark-like desert, yet white sharks arrive and linger there for an unknown reason. An earlier study suggested that, since both male and female great white sharks frequent this area, it may have been a mating ground. However, this hypothesis was disproved when shark pups were also discovered in the area. (source)