The reason is that the food is rotten. In 2007, as the protectionist trade embargo of Ukraine, the "European granary", entered its fifth month, grain traders here dumped thousands of tons of rotten grain into the Black Sea. Ukraine can't digest so much food at all, but due to the limited export quota, a large amount of food is piled up and moldy, and businessmen have to dump these moldy food into the Black Sea, causing serious losses.