The Dead Sea is a lifeless body of water between Israel and Jordan. A searingly high salt level inhibits any life-forms calling the Dead Sea home. No fish, no insects or even plants can be found in The Dead Sea. The salt level, which is 10 times saltier than the ocean, is so high that it has become a popular tourist attraction to float on the surface . But the Dead C is not really dead, and here is why:

1. During rainy seasons, salinity decreases to certain extent, making the water habitable for some bacteria. That’s all! No other life form can be found.
2. it is useful in several healthcare and treatment types. The pollen content of this lake is extremely low. It is also free of other allergens. On top of it, it is the home of different types of minerals. Also, solar UV radiation is greatly reduced near Dead Sea. Additionally, atmospheric pressure near this lake is high because of its low elevation. These factors together make it beneficial for human health.
3. This lake is the primary source of potassium used worldwide for agricultural processes.

Here is more info on this

https://twistedsifter.com/2012/06/10-things-you-didnt-know-about-the-dead-sea/