Mysterious 'perfect' circles on the Mediterranean seabed identified

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An international and interdisciplinary team of researchers has managed to establish the origin of mysterious perfect circles first discovered more than 10 years ago at the bottom of the Mediterranean Sea. Scientists have identified them as a "lost world".

Mysterious 'perfect' circles on the Mediterranean seabed identified
© Rossiyskaya Gazeta
The results of a four-year underwater study were published by National Geographic magazine. More than 1,300 perfect circles are located at a depth of about 122 meters. Scientists were unable to explain their nature immediately after their discovery. They had not encountered such phenomena before.

The circles were first spotted in 2014 by an unmanned underwater vehicle. What surprised me was their regular, almost perfect shape. They are all about the same size - about 20 meters in diameter. What turned out to be even stranger was that there is a dark spot in the center of almost every circle.

"We had no idea what it was," admits one of the authors of the discovery, marine biologist Christina Pergent-Martini.
The last four years have been spent studying the nature of the mysterious circles. An important clue was provided by underwater caves located near the circles. Scientists have suggested that this area of ​​the seabed could be part of an ancient coastline that was flooded after the last ice age more than 10,000 years ago.


The circles were finally identified based on a study conducted in 2024. It covered about ten square kilometers, and it was within its framework that researchers counted more than 1,300 mysterious circles. They were able to take core samples from the circles, and radiocarbon dating showed that the oldest material in the center of the circles is about 21,000 years old.

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