1. Bohai Sea has ideal conditions for building a world-class marine pasture. Due to the injection of the Yellow River, Haihe River and Luanhe River, the seawater in Bohai Sea contains more organic matter and inorganic salts, and its PH value is moderate. In this sense, Bohai Sea is an eutrophic sea area. Because the water is shallow and the waves are small, all kinds of marine life have chosen the Bohai Sea as their "delivery room". Therefore, the Bohai Sea has been known as a "natural fishing pond" since ancient times, with more than 200 kinds of marine biological resources, including fish 1 10. China's mariculture technology is relatively mature, and some even occupy a place in the world. It is precisely because of the mature technology that the output of aquatic products in China ranks first in the world for several years in a row, and the shrimp culture technology and benefit indicators rank among the top in the world. Counties with an annual output of more than 10,000 tons of prawns are concentrated in the coastal areas of Hebei Province.

2. Coastal tourism: China's coastline is long and tortuous, with many offshore islands and complete coastal landforms. The coastal zone spans three climatic zones from north to south, with different natural scenery and many scenic spots with high tourism value. China has a long history, rich marine culture and rich coastal cultural landscape. To sum up, China's marine tourism landscape can be roughly divided into the following categories.