the.com/dead sea

means A hypersaline lake between Jordan and Israel so dense with salt that swimmers bob on the surface like corks instead of sinking.

from Its name is a straightforward, ancient description — Latin 'Mare Mortuum' and earlier Greek/Hebrew equivalents all called it 'dead' because the salt concentration (roughly ten times that of ocean water) kills off fish and most aquatic life that drifts in from feeder streams. No myth needed here; the name is just an old, accurate observation about a lake too harsh to sustain life.