Turns out The Mediterranean Sea is not the only mediterranean sea — the Red Sea is one as well.

From Wikipedia:

A mediterranean sea, in oceanography, is a mostly enclosed sea that has limited exchange of deep water with outer oceans and where the water circulation is dominated by salinity and temperature differences rather than winds.

There are two types of mediterranean sea. A concentration basin has a higher salinity than the outer ocean due to evaporation, and its water exchange consists of inflow of the fresher oceanic water in the upper layer and outflow of the saltier mediterranean water in the lower layer of the connecting channel.

A dilution basin has a lower salinity due to freshwater gains such as rainfall and rivers, and its water exchange consists of outflow of the fresher mediterranean water in the upper layer and inflow of the saltier oceanic water in the lower layer of the channel. Renewal of deep water may not be sufficient to supply oxygen to the bottom.

Are you curious to know which type the Mediterranean Sea is? How about the Red Sea?