Figure 1
From: Uncovering marine connectivity through sea surface temperature

The Mediterranean Sea and its sub-basins. The red dot indicates the Suez Canal, which physically connects the Red Sea with the Levantine Sea; the green dot shows the Gibraltar Strait location, from which Atlantic waters enter the Mediterranean Sea near the surface, and vice versa at depth. (USGS Imagery Topo: courtesy of the U.S. Geological Survey. Map visualization produced with Matlab R2018a, https://www.mathworks.com/).