Re-post, on the occasion of the upcoming holiday of Shevii Shel Pesach, which commemorates the Red Sea drowning of the Egyptians. See Wikipedia, "Shevi'i shel Pesach" (en.wikipedia.org/wiki/S…): "Shevi'i shel Pesach is the seventh and last day of the Passover holiday, which falls on the 21st of Nisan. On this day, according to the Jewish tradition, the splitting of the Red Sea occurred." (This is an installment of a broader macro-series that was first published a year ago.)