Don Juan Pond in Antarctica is known for being the saltiest body of water in the world, with salinity levels frequently exceeding 40% and sometimes reaching mid-40s. This high level of salt, which is primarily calcium chloride, prevents the pond from freezing when air temperatures are as low as −50 °C (−58 °F).
Lake Assal, in Djibouti, is the saltiest lake in Africa and one of the saltiest in the world, with a salinity of about 34.8%—although Don Juan Pond is saltier than Lake Assal.
The Dead Sea, between Jordan and Israel, is famous for its salinity (about 34.2%) and being the deepest hypersaline lake in the world, although its salinity is lower than that of Lake Assal and Don Juan Pond.
The Caspian Sea is the largest inland water body, but its salinity is quite low, at only 1.2%, which is only one-third as salty as regular seawater.