What color is the Bosphorus

Water on the Bosphorus suddenly changes color

June 17, 2017 | 5:44 pm


Residents amazed

The residents of Istanbul are amazed. That's behind it.

The water of the Bosporus has changed its color in the past few days - from the usual blue to turquoise. This phenomenon in the strait between Europe and Asia is due to an explosion of plankton in the Black Sea, researchers said on Wednesday. This is not threatening, but a blessing for the anchovies, which are popular with the Istanbul people.

"This has nothing to do with pollution," said Hacettepe University environmental scientist Ahmet Cemal Saydam to Dogan News Agency. Rather, the bright turquoise is a result of the strong reproduction of the microorganism Emiliania huxleyi, Ehux for short. This is an alga that is found in the oceans around the world and plays an important role in the ecosystem.

Current satellite images from the US space agency Nasa show that in addition to the Bosporus, large parts of the Black Sea have also turned turquoise. Nasa also attributed the phenomenon to the algal bloom. Ehux flowers can span vast areas. The reason for the discoloration of the water is that the tiny particles reflect the sunlight and thus make the sea appear in a milky turquoise.

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