Nature has a strange way of giving shape to each species of life. It is an old saying that there is an entirely different and new world beneath the sea.

There are thousands of strange creatures under the sea, with unique characteristics. One of them is “flat-fish”, which had been surprising the scientists with its weird placement of eyes.

The species of flat fish include names like flounder, halibut, soul, turbot and plaice. These fish generally live on the bottom of deep waters. One strange thing about them is that both of their eyes are placed on one side of the head.

The scientists had been long trying to find an answer regarding the structure of the flat fish, and two old fossils of the flat fish found by them recently has explained that one-sided arrangement of the eyes is the result of evolution.

In an article published scientific journal Nature, 26-year old Matt Freidman of University of Chicago doctoral said that originally their eyes were placed on both sides of the head, but one eye migrated over millions of years.

The scientists had been long giving attention to these unique unsymmetrical vertebrates, to find out that how the fish reached to its current stage.

The research has also found that flat fish, when young has its eyes placed normally, but as it grows, one eye migrates and reaches to the other part of the head.