A view of Bostanli coast covered with sea ââlettuce (Ulva lactuca) spreading in Gulf of Izmir, Turkey on October 10, 2021. Sea lettuce, which grows due to the increasing of nitrogen and phosphorus because of water pollution, covered water surface of the lagoon, which hosts bird species, as well as the northern shores of the bay. (Photo by Mahmut Serdar Alakus/Anadolu Agency via Getty Images)
