Istanbul surrounded by the sea, the unique geographical environment, the southern edge of马尔玛拉海are important fishing grounds and excellent water playing field, the Bosphorus with the season there will be a variety of fish migration through this, for the city He brings a wealth of marine resources and tourist crowds. <br><br>With the emergence of the foreign population at an annual rate of nearly 300,000, from a total population of Istanbul 1500000-1 14 million today, the 1960s, the growth is not difficult to imagine how amazing the amount of sewage discharged! Here, the waste water discharged per day is 224 liters. The results sewage discharge enough time, so close to the heavily polluted waters, fish populations and species are significantly reduced.
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