The state of marine waters in the world Seawater, which is approximately 96% of the total water on Earth, are systematically poisoning the run-off pollution of rivers and moved with the wind. They are primarily municipal and industrial wastewater containing organic compounds (eh pesticides, detergents, petroleum-derived substances, fluoroscopic), nitrogen and phosphorus (nutrients compounds) and toxic heavy metals. In addition, from time to time make additional pollution disaster drilling equipment and oil tankers. Passing into the water substances are dangerous not only for typical aquatic organisms, but also for living in the coastal zone and marine birds. Particularly vulnerable are small and shallow marine waters, such as the Baltic Sea, which lies nine highly industrialized and developed agriculture. During the year goes to the Baltic Sea between the other one thousand tonnes of nitrogen, phosphorus, and several dozen tonnes of cadmium in the waters of rainwater, waste water in industrial, municipal, and largely as an exodus from the agricultural area. This has led to severe sophistication of the reservoir, and in many places that collect at the bottom of organic products (mainly hydrogen sulphide and methane) have established the growing dead zone sediments