no
Lake Maracaibo is saltwater, being an estuary rather than a true lake.
If the question is, "what is a saltwater lake in the sea (called)"? The answer is a lagoon
No
Sambhar lake
Lake Erie is a freshwater lake.
The Great Salt Lake in Utah
No, all LAKES are freshwater. OCEANS are saltwater. Lake Michigan is a freshwater lake, but the answer above is false. See, for example, http://en.wikipedia.org/wiki/Great_Salt_Lake or http://en.wikipedia.org/wiki/Lake
It is a saltwater lake, and the largest lake in the world.
Freshwater
Lake.
Freshwater.