see more

General view of the Bosphorus is seen after it has turned turquoise due to phytoplankton on June 14, 2017, in Istanbul. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAÕs Aqua satellite first captured the phytoplankton bloom in the Black Sea on May 29. Phytoplankton consists of floating, microscopic organisms that make their own food from sunlight and dissolved nutrients. Ample water flow from rivers like the Danube and Dnieper carry nutrients to the Black Sea. In general, phytoplankton can support fish, shellfish and other marine organisms. Large, frequent blooms can lead to eutrophication Ð the loss of oxygen from water Ð and end up suffocating marine life. / AFP PHOTO / BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)

General view of the Bosphorus is seen after it has turned turquoise due to phytoplankton on June 14, 2017, in Istanbul. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAÕs Aqua satellite first captured the phytoplankton bloom in the Black Sea on May 29. Phytoplankton consists of floating, microscopic organisms that make their own food from sunlight and dissolved nutrients. Ample water flow from rivers like the Danube and Dnieper carry nutrients to the Black Sea. In general, phytoplankton can support fish, shellfish and other marine organisms. Large, frequent blooms can lead to eutrophication Ð the loss of oxygen from water Ð and end up suffocating marine life. / AFP PHOTO / BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)
Getty Images

AFP BULENT KILIC

see more

General view of the Bosphorus is seen after it has turned turquoise due to phytoplankton on June 14, 2017, in Istanbul. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAÕs Aqua satellite first captured the phytoplankton bloom in the Black Sea on May 29. Phytoplankton consists of floating, microscopic organisms that make their own food from sunlight and dissolved nutrients. Ample water flow from rivers like the Danube and Dnieper carry nutrients to the Black Sea. In general, phytoplankton can support fish, shellfish and other marine organisms. Large, frequent blooms can lead to eutrophication Ð the loss of oxygen from water Ð and end up suffocating marine life. / AFP PHOTO / BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)

General view of the Bosphorus is seen after it has turned turquoise due to phytoplankton on June 14, 2017, in Istanbul. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAÕs Aqua satellite first captured the phytoplankton bloom in the Black Sea on May 29. Phytoplankton consists of floating, microscopic organisms that make their own food from sunlight and dissolved nutrients. Ample water flow from rivers like the Danube and Dnieper carry nutrients to the Black Sea. In general, phytoplankton can support fish, shellfish and other marine organisms. Large, frequent blooms can lead to eutrophication Ð the loss of oxygen from water Ð and end up suffocating marine life. / AFP PHOTO / BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)
Getty Images

AFP BULENT KILIC

see more

General view of the Bosphorus is seen after it has turned turquoise due to phytoplankton on June 14, 2017, in Istanbul. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAÕs Aqua satellite first captured the phytoplankton bloom in the Black Sea on May 29. Phytoplankton consists of floating, microscopic organisms that make their own food from sunlight and dissolved nutrients. Ample water flow from rivers like the Danube and Dnieper carry nutrients to the Black Sea. In general, phytoplankton can support fish, shellfish and other marine organisms. Large, frequent blooms can lead to eutrophication Ð the loss of oxygen from water Ð and end up suffocating marine life. / AFP PHOTO / BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)

General view of the Bosphorus is seen after it has turned turquoise due to phytoplankton on June 14, 2017, in Istanbul. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAÕs Aqua satellite first captured the phytoplankton bloom in the Black Sea on May 29. Phytoplankton consists of floating, microscopic organisms that make their own food from sunlight and dissolved nutrients. Ample water flow from rivers like the Danube and Dnieper carry nutrients to the Black Sea. In general, phytoplankton can support fish, shellfish and other marine organisms. Large, frequent blooms can lead to eutrophication Ð the loss of oxygen from water Ð and end up suffocating marine life. / AFP PHOTO / BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)
Getty Images

AFP BULENT KILIC

see more

General view of the Bosphorus is seen after it has turned turquoise due to phytoplankton on June 14, 2017, in Istanbul. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAÕs Aqua satellite first captured the phytoplankton bloom in the Black Sea on May 29. Phytoplankton consists of floating, microscopic organisms that make their own food from sunlight and dissolved nutrients. Ample water flow from rivers like the Danube and Dnieper carry nutrients to the Black Sea. In general, phytoplankton can support fish, shellfish and other marine organisms. Large, frequent blooms can lead to eutrophication Ð the loss of oxygen from water Ð and end up suffocating marine life. / AFP PHOTO / BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)

General view of the Bosphorus is seen after it has turned turquoise due to phytoplankton on June 14, 2017, in Istanbul. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAÕs Aqua satellite first captured the phytoplankton bloom in the Black Sea on May 29. Phytoplankton consists of floating, microscopic organisms that make their own food from sunlight and dissolved nutrients. Ample water flow from rivers like the Danube and Dnieper carry nutrients to the Black Sea. In general, phytoplankton can support fish, shellfish and other marine organisms. Large, frequent blooms can lead to eutrophication Ð the loss of oxygen from water Ð and end up suffocating marine life. / AFP PHOTO / BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)
Getty Images

AFP BULENT KILIC

see more

General view of the Bosphorus is seen after it has turned turquoise due to phytoplankton on June 14, 2017, in Istanbul. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAÕs Aqua satellite first captured the phytoplankton bloom in the Black Sea on May 29. Phytoplankton consists of floating, microscopic organisms that make their own food from sunlight and dissolved nutrients. Ample water flow from rivers like the Danube and Dnieper carry nutrients to the Black Sea. In general, phytoplankton can support fish, shellfish and other marine organisms. Large, frequent blooms can lead to eutrophication Ð the loss of oxygen from water Ð and end up suffocating marine life. / AFP PHOTO / BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)

General view of the Bosphorus is seen after it has turned turquoise due to phytoplankton on June 14, 2017, in Istanbul. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASAÕs Aqua satellite first captured the phytoplankton bloom in the Black Sea on May 29. Phytoplankton consists of floating, microscopic organisms that make their own food from sunlight and dissolved nutrients. Ample water flow from rivers like the Danube and Dnieper carry nutrients to the Black Sea. In general, phytoplankton can support fish, shellfish and other marine organisms. Large, frequent blooms can lead to eutrophication Ð the loss of oxygen from water Ð and end up suffocating marine life. / AFP PHOTO / BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)
Getty Images

AFP BULENT KILIC