Option 1: This statement is correct. The Sargasso Sea is characterized by an anticyclonic circulation of ocean currents. This means that the currents in the area move in a clockwise direction, creating a circular pattern.

Option 2: This statement is correct. The Sargasso Sea is known for having the highest salinity in the Atlantic Ocean. This is because the area is surrounded by currents that bring in saltier water.

Option 3: This statement is incorrect. The correct position of the Sargasso Sea is west of the Canary Current and east of the Gulf Stream. The Gulf Stream flows north along the eastern coast of the United States, while the Canary Current flows south from the coast of northwest Africa. The Sargasso Sea is located in between these two currents.

Option 4: This statement is correct. The Sargasso Sea is confined within a gyre, which is a circular system of currents. The water in the Sargasso Sea is often calm and motionless, creating a unique environment.

In conclusion, the only incorrect statement about the Sargasso Sea is option 3. The Sargasso Sea is located west of the Gulf Stream and east of the Canary Current, not the other way around.