Scientists have discovered a sixth sea flowing under the earth.

A new study has provided further evidence for the theory that there is a sixth Earth's ocean beneath our feet. We are also familiar with the oceans called Atlantic Ocean, Pacific Ocean, Indian Ocean, Arctic Ocean and Antarctic Ocean and they are also observable. They flow on the outermost geological layer of our planet Earth. But a new study published in the scientific journal Nature Geoscience suggests that there is also a sixth ocean extending around the globe about 400 miles below the surface, at a boundary layer between the Earth's top and bottom.

The average depth of the Earth's crust is five to twenty-five miles, while the lower and upper parts extend for about twenty-nine hundred miles. shows that there is a large amount of water in the Earth's interior, similar to a large underground ocean of water, but it is found in mineral deposits and not in surface oceans. According to a study published in the journal Nature in 2014, based on the study of water samples in the mineral ringwoodite found in a diamond mine in Brazil, it was reported that the upper and lower mantle of the Earth. The transition zones in between can absorb up to 1% water by weight. One of the researchers who conducted a similar study published in the journal Science in 2017 told New Scientist magazine that the transition zone could contain as much water as all the oceans on Earth. The new study also examined a diamond that was mined in the African country of Botswana. The study found that the diamond likely formed at a depth of about 400 miles, or 660 kilometers, associated with the transition zone. Based on studies of ringwoodite found in diamonds and the state of this mineral, researchers now believe that the water region extends below the transition zone and somewhat into the planet's lower mantle.