He said the rectangular patterns could be formed by what he calls "square waves." "And some of our elders have said the supernatural beings may have had a hand in that," the councillor said.

These checkerboard patterns aren't limited to any geographical region While there is one beach with the highest riptide casualties in the world, these square waves don't discriminate where they form.

A cross sea can sometimes be accompanied by waves of up to 10 feet, and unusual wind patterns. Boaters are advised to stay in the shallows if they encounter square waves at sea.

When counteracting waves collide at a right angle, they can sometimes form square waves. The rare phenomenon is quite stunning to the observer, creating a chessboard -like pattern on the water’s ...

A video shows concerned fishermen scanning the sea as waves form a chessboard-like pattern. Experienced surfers and boaters know to get out of the water when they see the rare wave pattern.