Thanks @dexter-k This brought back memories of my two visits to the Dead Sea. I first went there by bus from Jerusalem in 1995, stopping at Ein Gedi. Then Ein Gedi was a just car park and bus stop. And I got the photo reading a paper while floating. That was in the era of film cameras of course.
I went again, in 2004 on a trip to Jordan. Unfortunately at this time there was a great storm and the sea was so rough it was hard to stand up.
The thing I remember most and warn other people is don't get the water in your eyes.