Why the Dead Sea Is Called a "Sea" Despite Being a Lake

The Dead Sea, bordered by Israel, Jordan, and the West Bank, is geologically a hypersaline lake—it has no outlet, and its salinity (~34%) far exceeds seawater. Yet it has been called a "sea" for millennia.

The name persists for historical, cultural, and linguistic reasons. Millions of years ago, the basin was connected to the Mediterranean Sea. As tectonic uplift cut it off, evaporation concentrated salts, but the ancient designation stuck. Biblical texts (e.g., "Salt Sea," "Sea of the Arabah") and classical geography cemented the term.

Regionally, it functions like a sea: it supports mineral extraction, tourism, and has strategic significance. The name also distinguishes it from freshwater lakes in the area. Scientifically, it's an endorheic lake; colloquially and historically, it remains the Dead Sea.