I went to the beach and thought those squares were a rare phenomenon so I stopped to take pictures. When I got back, I was shocked.
Answer: Square waves (cross sea) occur when two ocean wave systems move towards each other at an oblique angle. Sometimes, the waves cross each other at a 90-degree angle, creating strange square patterns. This is a rare phenomenon in nature and looks beautiful, but in fact, square waves are considered a dangerous disaster.
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