Photos: Phytoplankton Bloom Turns Istanbul’s Dark Waters a Brilliant Turquoise

A natural phenomenon called a "phytoplankton bloom" has turned the normally dark waters of the Bosporus and the Golden Horn into an opaque tone of light blue.

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AP Photo/Lefteris Pitarakis
","id":"174870","thumbnail_url":"https://nbcots.go-vip.co/news/national-international/windowless-planes-may-fly-in-10-years/174870/","type":"image","focusedSlide":""},{"caption":"Children jump into Istanbul's Bosphorus Strait, Wednesday, June 14, 2017. The waters around Istanbul have turned a striking shade of turquoise due to a natural phenomenon called "phytoplankton bloom" which has turned the normally dark waters of the Bosporus and Golden Horn into an opaque tone of light blue.
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MODIS/NASA Aqua Satellite
The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured data on May 29, 2017, for this image of an ongoing phytoplankton bloom in the Black Sea. The image is a mosaic, composed from multiple satellite passes over the region, NASA says.
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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. 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, the loss of oxygen from water and end up suffocating marine life.
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Getty Images
In this June 15, 2016 photo showing what the water usually looks like, people enjoy a boat ride across the Golden Horn ahead of evening prayer at Eyup Mosque during the holy month of Ramadan in Istanbul, Turkey.
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AP Photo/Lefteris Pitarakis
In this Wednesday, June 14, 2017 photo, a boat is anchored in Istanbul's Bosporus Strait.
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AP
People play backgammon in a coffee shop by Istanbul's Bosphorus Strait, Wednesday, June 14, 2017. Turkish media report a significant part of the Black Sea and the Bosphorus has turned turquoise due to phytoplankton.
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AP Photo/Lefteris Pitarakis
A boat approaches Istanbul's Golden Horn that leads to Bosphorus Strait, Tuesday, June 13, 2017.
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AP
In this Wednesday, June 14, 2017 photo, backdropped by the Golden Horn and Byzantine-era Hagia Sophia, a couple takes a selfie in Istanbul.
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AP Photo/Lefteris Pitarakis
In this Wednesday, June 14, 2017 photo, people try to catch fishes on a bridge over Istanbul's Golden Horn that leads to Bosporus Strait.
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AP
Children swim in Istanbul's Bosporus Strait on Wednesday, June 14, 2017.
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Bulent Kilic/AFP/Getty Images
People travel by ferry boat on the Bosphorus after it has turned turquoise due to phytoplankton on June 14, 2017, in Istanbul.
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Lefteris Pitarakis/AP
People try to catch fish on a bridge over Istanbul's Golden Horn that leads to Bosphorus Strait, Tuesday, June 13, 2017.
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Getty Images
A Turkish family sits in Gulhane Park on the Bosphorus Strait, with its water a typically darker shade of blue, July 12, 2001, in the Old City of Istanbul, Turkey.
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Getty Images
Two Turkish woman sit by the Bosphorus, in Eminonou, with the old Genoese Galata tower in the background July 12, 2001, in Istanbul, Turkey.
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