在我国四大海域中,渤海是唯一的内海。由辽东半岛、山东半岛和京津唐秦所组成的环渤海地区,是我国地理位置比较优越、科技文化水平比较发达、自然资源比较丰富、发展余地广阔的地区。就经济发展的基础条件而言,并不亚于长江三角洲、珠江三角洲、闽江三角洲等其他沿海地区,堪与美国的墨西哥湾,苏联的黑海和日本的瀨户 Among the four seas in China, the Bohai Sea is the only inland sea. The Bohai Rim region, which consists of the Liaodong Peninsula, Shandong Peninsula, and Beijing, Tianjin and Tangqin, is an area with comparatively superior geographical position, well-developed science and technology, abundant natural resources and vast space for development. As far as the basic conditions of economic development are concerned, no less than the other coastal areas such as the Yangtze River Delta, the Pearl River Delta and the Minjiang River Delta, the United States, the Gulf of Mexico, the Black Sea of ​​the Soviet Union and the Seto