<p><strong>Fig 2.21.</strong>&nbsp;(<strong>B</strong>) Thermohaline circulation in the Baltic Sea is driven by high rates of precipitation and runoff. Less dense water flows out of the sea on the surface and denser water flows in along the ocean floor.</p>

Fig 2.21. (B) Thermohaline circulation in the Baltic Sea is driven by high rates of precipitation and runoff. Less dense water flows out of the sea on the surface and denser water flows in along the ocean floor.

Image by Byron Inouye