Which is the world's northernmost tropical sea?

I am lucky enough to have swam in The dead Sea 1980 from the Jordanian side. in 1982 and 83 whilst working in Yanbu ( Saudi Arabia ) I swam in the Red Sea even all these years later I recall the temperature of both seas.

Anna J, is very important to note that it's one the saltiest SEAWATERS in the world. It's only about a tenth of the salinity of inland endorheic lakes such as the Dead Sea and, the saltiest one, Gaet'ale Pond in Ethiopia.

One of the warmest and saltiest bodies of water in the world. I never knew that.

I just love the questions this game asks!! I am on level 1,030 and I will never get tired of it!! I am just curious about how many levels there are!!!