Introduction to the tide flat: The pigeon nest tide flat is a good place to observe modern coastal sedimentation. You can see sedimentary structures such as wave marks, rain marks, cracks, and biological caves. The pigeon nest tide is different from the Qiantang River tide. It shows a calm and determined style of everyone. The broad tide flat turns into a vast ocean in a short while. Viewing the sea from here, the magnificent masterpiece of nature makes people full of ambition, hope and ideals. When the tide recedes, the waves of sea water left on the tidal flats form beautiful pictures.