Theory:

Dead Sea:
  • The high salt content of the Dead Sea makes people easily float on its surface due to the natural buoyancy.
  • Floating around is not only a fun-filled experience, but a great way to relax after seeing Jordan and Israel’s other top sights.
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The high salt and mineral content of the Dead Sea has powerful healing properties. It’s a popular destination for treating skin problems such as acne, psoriasis and cellulite, as well as muscle ache and arthritis.
 
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Biggest Lake: Caspian Sea.
The coastline of Caspian sea is shared by Russia, Iran, Turkmenistan, Kazakhstan, and Azerbaijan.
It is also one among the deepest lakes in the world with a maximum depth of more than \(3,300ft\)!
 
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