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Earth from space: Crimea's 'putrid sea' creates beautiful rainbow of color but smells like rotten eggs

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75% Informative

Lagoons stretch across the Sivash region, a roughly 3,900-square-mile ( 10,000 square kilometers ) area of marshland across the northern Crimean Peninsula .

They are all hypersaline, meaning that they contain high levels of minerals that make them salty, and have thick layers of silt across their bottoms.

When algae bloom in summer , they can give off a pungent, rotten egg-like smell, which has earned the region its foul nickname.