If you see square waves forming in the ocean, get out of the water immediately

Nothing is more beautiful than the natural world. It never ceases to astonish us with its amazing ability to morph.

The peculiar phenomenon known as cross seas or waves that form watery grids is one of nature’s wonders that captivates us.

When two sets of wave systems mix at angles greater than 45 degrees, or when waves are pushed in one direction by the wind and in another by a swell, these grids are formed. Nevertheless, despite their apparent beauty, these grids can pose a serious risk to ships and swimmers.

Beneath the spectacular picture lie currents that have the potential to destroy ships and endanger persons swimming in the ocean, since the water exhibiting these chessboard-like patterns is very treacherous. Scientists surmise that a significant number of shipwrecks and boat mishaps occur overseas.

“The conditions are quite common in the ocean and occur when a windsea and a swell, or two swell systems, coexist,” the European Space Agency stated in 2010.

Referencing a 2004 study, it was found that “many ship accidents occurred in crossing sea states.”

This phenomena is quite common at the Isle Rhe, on the western coast of France. Tourists can view the water grids from a lighthouse on the western side of the island, although it is quite dangerous to go into the water while it happens.