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Another unidentified creature found in Antarctica

Scientists find signs of life under the ice.

By Monu EllaPublished 3 years ago 4 min read
Another unidentified creature found in Antarctica
Photo by Jay Ruzesky on Unsplash

In most people's impression, the entire Antarctic continent is covered by an ice cap, a huge ice cap more than 5 million years old, with a diameter of about 4,500 km and an area of about 13.98 million square kilometers, accounting for about 98% of the Antarctic continent. The average thickness of the ice cap is about 200 meters, with a maximum thickness of more than 4,000 meters. The total volume of the ice cap is more than 20 million cubic kilometers, accounting for 90% of the world's land ice volume and 70% of the total fresh water.

Thousands of meters of thick ice covered in the pressure and gravity of the joint extrusion of plastic flow, the formation of thousands of glaciers, glaciers to 1-30 meters per year from the inland plateau to the mid-perimeter of the coastal area sliding, in the sea to form a large area of sea ice tongue, the year-round neither broken (except the edge), which is the Antarctic ice shelf, plus these ice shelves, the Antarctic continental area can increase 1.5 million square kilometers.

However, scientists have found that under the ice of the Antarctic, hides a mysterious world. For example, there are about 400 lakes hidden under the Antarctic ice cap, many of which are connected by drainage basins, a landscape that no human has ever seen before.

Scientists had drilled Lake Williams and accidentally found signs of ancient life. Lake Williams is located about 800 meters below the ice surface in West Antarctica, with a length of 12 kilometers, a width of 8 kilometers, and a depth of 60 meters.

By Cassie Matias on Unsplash

Through the camera carried at the drill, a muddy lake bottom appeared before the scientists' eyes, littered with clods of earth. A stream of mud was also floating in the lake water. The image was not very pix elated and coarse-grained, as if the Viking lander had sent back images of the Martian surface 36 years ago.

Scientists found ancient life forms here, the shells of an ancient microorganism called diatoms, and later found almost 4,000 species of single-celled organisms, most of which appear to have fed on the sediments at the bottom of the lake. These sediments were deposited when the area was last not covered by ice and was at the bottom of the ocean, and are at least 120,000 years old.

Many of these microorganisms convert ammonia into nitrite. The most common type of microbe, accounting for 13 percent of the DNA sequences found, feeds on nitrite, converting it to nitrate. Other microbes appear to feed on methane.

Scientists analyzing retrieved water samples

The discovery has scientists abuzz. The discovery of ancient lifeforms helps answer big questions, such as whether the receding Antarctic glaciers are accelerating global warming. Some scientists believe that microbes under the glaciers may have made billions of tons of methane, which is a powerful greenhouse gas. When a glacier melts, it escapes into the atmosphere, accelerating warming.

After discovering ancient lifeforms, scientists were surprised to find unidentified organisms under the Antarctic ice.

Researchers conduct scientific research on the Kirchner Ice Shelf, one of the three largest ice shelves in Antarctica. A team of polar scientists from the British Antarctic Survey used a Go Pro to launch an observation of a boulder and accidentally discovered strange creatures lurking on a rock beneath the icy continent, a discovery that delighted the scientists.

Because in most people's impression, Antarctica is a frozen, almost lifeless desert, especially under the ice shelf 160 miles inland, previous studies have never found any fixed life. This is because, in previous perceptions, the basic conditions needed by all living things such as animals and plants to survive are the same, all need nutrients, sunlight, air, water, and the right temperature and certain living space.

The thickness of the ice surface in the drilling area is 890 meters, and the depth of the sea floor is 1233 meters. After careful study by scientists, a total of 22 individual animals were found under the ice, forming an inactive filtering biome, and so far, where they come from, what they feed on and their distribution remains a mystery.

It is reasonable to assume that life cannot exist in such extreme conditions on Earth, knowing that ice cuts off sunlight and also suspends photosynthesis - and that is the source of energy for most ecosystems on Earth. Therefore, if there is life under the glaciers, they must obtain energy by breaking down minerals. Some ancient lifeforms like those previously found under Antarctic ice used the energy in ammonium chemical bonds to fix carbon dioxide and drive other metabolic processes, while others relied on the energy and carbon in methane to survive. These ammonium and methane may have originated from the decomposition of organic matter, which was much warmer in Antarctica long ago than it is today, when the sea-flooded West Antarctica may have deposited large amounts of organic material.

Regardless, their survival conditions break through human perception, which means that scientists' idea of determining whether life exists on any of the extraterrestrial bodies by oxygen, water, and other substances may be wrong. Overall, the discovery of unidentified organisms under the Antarctic ice cap has fueled the idea that life may exist beyond Earth. This means that the conditions for the birth of life may well be more easily met in the universe than we thought.

The successive discoveries of ancient lifeforms and unidentified organisms under the Antarctic ice have scientists very boisterous, and scientists believe that the discovery of microbial communities under the Antarctic ice has opened a window into how we can learn how these microbes survive in extreme environments.

Scientists believe that we can detect similar environments on extraterrestrial bodies and investigate them through the study of the world under the Antarctic ice, and it is possible to discover extraterrestrial life.

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About the Creator

Monu Ella

And I know it's long gone and there was nothing else I could do

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  • Mao Jiao Li3 years ago

    Knowledge has increased again!

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