Why is the abyss usually "foggy" compared to the beaches?
If you drive along a highway that faces an irregular coastline, you may have noticed that fog is more likely to form in certain areas. For example, the lands that are usually experienced in the Caspian Sea are more foggy than the beaches that are "close to each other" in the mouth of the bay. Why? As the air moves along the coast, it crosses the coastline at nearly a right angle, causing the air to move together or converge in the vicinity of the ridge. This region is weak, convergence causes the level of cool air to increase only slightly. If the air is saturated, it will cool to the dew point, and fog will form. Meanwhile, near the coastal area, notice that the surface air spreads or passes over the coastline. This weak range causes sinking and slightly warmer air. Since air sinking causes a separation between air temperature and dew point, fog is less likely to form in this region. Hence, the lands can be shrouded in fog at sunset while the coasts are.