2004年6月15日,国家海洋局宣布:中国海监飞机和舶近日在渤海海域发现大面积有毒赤潮。其中,黄河附近海域的赤潮面积约1,850平方公里,主要赤潮生为棕囊藻;天津塘沽附近海域至渤海湾中东部及北海域赤潮面积约3,200平方公里,主要赤潮生物为米凯伦藻(三宅裸甲藻)。棕囊藻、米氏凯伦 On June 15, 2004, the State Oceanic Administration announced: China’s maritime surveillance aircraft and ship recently discovered a large area of ​​toxic red tides in the Bohai Sea. Among them, the area around the Yellow River has a surface area of ​​about 1,850 square kilometers of red tide, and the main red tide is Phaeocystis. The area of ​​red tide near the area from Tianjin Tanggu to the central and eastern Bohai Bay and the North Sea is about 3,200 square kilometers. The main red tide organisms are Michelin Nudibranch). Phaeocystis, Mie Karen