The saltiest sea in the world is the Dead Sea, located between Israel and Jordan. The Dead Sea has a salinity of approximately 30%, making it nearly ten times saltier than most oceanic bodies of water. This extreme salinity is due to high evaporation rates in the region combined with low water inflow. The high salt concentration prevents most marine life from thriving in the Dead Sea, leading to its name. It is famous not only for its unique properties but also for its therapeutic benefits and significant historical and religious importance.