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Which sea is the saltiest in the world?

OceansSeas

Quick Answer

The Red Sea is one of the saltiest major seas in the world, averaging around 40‰ to 41‰ salinity. Very high evaporation and little river input make it unusually saline.

The Full Story

The Red Sea is the saltiest major sea on Earth, with surface salinity commonly around 40 to 41 parts per thousand, higher than the open ocean average of about 35‰. Its extreme salinity comes from intense evaporation, very low rainfall, and almost no major rivers flowing into it. It is also one of the warmest seas, which further increases evaporation. The sea lies between Africa and Asia and connects to the Indian Ocean through the Bab el-Mandeb strait.

Key Facts

1.Average salinity: about 40–41‰
2.Open ocean average salinity: about 35‰
3.Major outlet: Bab el-Mandeb strait

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