Coastal Erosion
The northeastern coast is the sandstone area with the most developed sea erosion . Except for Waiao, Xiaoao and Gengfang River which are beach terrains, most of the coast are affected by sea erosion. The formation of sea eroded land is due to the alternating hard and soft rock formations. Under the long-term northeast monsoon and the corrosion of strong waves, strange and dangerous huge rocks and steep headlands were formed. The sea erosion terrain also includes wavecut platforms, tofu rocks, Cuesta, ocean-erosion ditches and other different forms. The most peculiar sea-eroded terrain is the single-sided mountain or cuesta and tofu rock. Cuesta is a terrain with steep one side and a gentle side due to the different hardness of the sedimentary rock; the formation of the block-shaped tofu rock is even more special. The rock layer must have two orthogonal joints to prevent the rock from being broken by the impact of the waves.
Sandy Beach Terrain
In this area,the bay is a unique gift from God. On the beach, you can pick shells, catch crabs, pile sand sculptures, and experience beach-seine fishing. Sit on the shore, while looking at the waves and rocks close by causing waves of waves, or you can also view the Turtle Island. The blue sea, white waves and the standing Turtle Island at a distance constitutes a beautiful beach scene. In addition, whistling pine trees windbreaks were planted along the dikes, and there are some yurts for catching eel seedlings at the tree-shaded areas inside the windbreaks; beach-raising areas are set up outside the windbreaks to formulate sand coast construction methods.
Kuroshio Current
The Kuroshio is a warm current in the Pacific Ocean and the second largest ocean current in the world. The Kuroshio originates from the North Equatorial Current in the East Pacific Ocean. When the North Equatorial Current flows from east to west, it begins to split into two when it hits Luzon Island in the Philippines. The Kuroshio that flows northward along the east coast of Taiwan all the year round is what we call the “Kuroshio” and bypasses it. The Kuroshio tributary entering the Taiwan Strait from southern Taiwan. It was what the ancestors commonly called the “Black Water Ditch” .