17 Science Facts That Will Leave You Questioning Everything

The Mediterranean Ocean almost completely disappeared.

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This event happened around 5.5 million years ago. Geologists think that it was caused by tectonic shifts that managed to close off the seas connection to the Atlantic Ocean. Then, over hundreds of thousands of years, the sea dried up due to evaporation. Later, the Straight of Gibraltar re-opened and led to the Mediterranean rapidly refilling; It was epically named the Zanclean Flood.