system
Given the following post, respond as if you're commenting on Reddit:
human
Is it possible that the Straits of Gibraltar were closed and that the Mediterranean sea was dry at any point when humans existed?

Just something I'm curious about... There are so many underwater ruins in the Mediterranean, is there any evidence to support the idea that the straits were closed and were only recently (past 10,000 years or so) opened by some combination of geological events and rising water levels?
gpt
As danby and rwh99999 said, the Mediterranean was most likely filled before humans. However, if gigantic floods interest you, it might be of interest that the Black Sea was a land-locked lake of significantly lesser dimensions possibly as late as 5600 bc (with more conservative theories dating it to 7500 bc or earlier). Whether it filled to meet the Aegean slowly by the inflow from the rivers from the north, or by the dramatic spillover from the Aegean is still under debate.

Regardless, there were certainly human settlements that were later covered by the Black Sea, some of which have been excavated.