Twice a day the water recedes and leaves only mud. The Koreans go into ankle deep mud to collect shell crabs, oysters and little tiny fish that live in the pools of water. We were walking on this bridge at about 4pm and they told us the water will return at 5. Of course we were very worried because we did not know how fast this water would be returning; we did not know if it would come in as fast as a tsunami or just a trickle. I was curious but very worried at the same time. We walked for about 45mins to a light house on the other side of the island, took some pictures and made our way back before the water covered the walkway that we were on. The walkway in the pictures that you see gets totally covered by this water. It reminds me of the children of Israel crossing the Red Sea. It was really cool to see.