It would also be beneficial if your students are familiar with currents and density, although neither is necessary.
Students integrate history and science while discovering how salinity affects the density of water.
The puzzle was that the water level never seemed to rise even though there was no apparent exit for this excess water. Many theories were introduced including the existence of under water channels. In 1679, Count Luigi Marsili solved this puzzle by setting up a model of the Mediterranean. He demonstrated the current flow using water masses of different salinities. Water in the Mediterranean has a high salinity and thus is denser than the Atlantic and the Black Sea ' s Water.