If the question is, "what is a saltwater lake in the sea (called)"?
The answer is a lagoon
Lake.
The world's largest lake is the Caspian Sea which is completely enclosed by Russia, Iran, Kazakhstan, Turkmenistan and Azerbaijan. There's no such thing as a "fresh salt water lake"
It is a saltwater lake, and the largest lake in the world.
In the past, the Dead Sea was presumed to be a sea because it was large and it contained saltwater. However, modern cartographers have shown it to be a lake, and not a sea. By the way, lakes CAN be saltwater.
A sea or bay. (or a saltwater lake, which is very rare)
There are both saltwater and freshwater varieties.
lake balkhash and the aral sea
Lake Superior is the largest lake in North America and the largest freshwater lake in the world. (The Caspian Sea is a saltwater lake.)
Saltwater fish have a natural habitat in the sea. Whereas, freshwater fish has a habitat in a river or a lake.
Caspian 'Sea' or Aral 'Sea' depending on their classification.
The Dead Sea is at the lowest elevation on land.
It depends on the structure of the lake. If the lake has an outlet and is not directly connected to the sea, then it would be freshwater. If the lake has no outlet, it is most likely saltwater.