
ISTANBUL, TURKEY - JUNE 15: A diver is seen as mucilage continues to be effective under water and to be threat for sea creatures in Sea of Marmara, Istanbul, Turkey on June 15, 2021. ( Şebnem Coşkun - Anadolu Agency )

ISTANBUL, TURKEY - JUNE 15: A diver is seen as mucilage continues to be effective under water and to be threat for sea creatures in Sea of Marmara, Istanbul, Turkey on June 15, 2021. ( Şebnem Coşkun - Anadolu Agency )

ISTANBUL, TURKEY - JUNE 15: Mucilage continues to be effective under water and to be threat for sea creatures in Sea of Marmara, Istanbul, Turkey on June 15, 2021. ( Şebnem Coşkun - Anadolu Agency )

ISTANBUL, TURKEY - JUNE 15: A diver is seen as mucilage continues to be effective under water and to be threat for sea creatures in Sea of Marmara, Istanbul, Turkey on June 15, 2021. ( Şebnem Coşkun - Anadolu Agency )

ISTANBUL, TURKEY - JUNE 15: Mucilage continues to be effective under water and to be threat for sea creatures in Sea of Marmara, Istanbul, Turkey on June 15, 2021. ( Şebnem Coşkun - Anadolu Agency )

ISTANBUL, TURKEY - JUNE 15: Mucilage continues to be effective under water and to be threat for sea creatures in Sea of Marmara, Istanbul, Turkey on June 15, 2021. ( Şebnem Coşkun - Anadolu Agency )

ISTANBUL, TURKEY - JUNE 15: A diver is seen as mucilage continues to be effective under water and to be threat for sea creatures in Sea of Marmara, Istanbul, Turkey on June 15, 2021. ( Ali Baran Akpolat - Anadolu Agency )

ISTANBUL, TURKEY - JUNE 15: A diver is seen as mucilage continues to be effective under water and to be threat for sea creatures in Sea of Marmara, Istanbul, Turkey on June 15, 2021. ( Ali Baran Akpolat - Anadolu Agency )

ISTANBUL, TURKEY - JUNE 15: A diver is seen as mucilage continues to be effective under water and to be threat for sea creatures in Sea of Marmara, Istanbul, Turkey on June 15, 2021. ( Ali Baran Akpolat - Anadolu Agency )