Which natural phenomenon is created by the gravitational attraction of the moon?

The phenomenon created by the gravitational attraction of the moon is tides. Tides are the regular rise and fall of sea levels caused primarily by the gravitational pull exerted by the moon, and to a lesser extent, the sun. The moon's gravitational force pulls water towards it, leading to a bulge of water on the side of the Earth facing the moon, which creates a high tide. On the opposite side of the Earth, there is another bulge due to the centrifugal force resulting from the Earth-moon system's rotation, also resulting in high tide. The areas between these bulges experience low tides.

Understanding tides is crucial as they affect marine navigation, coastal ecosystems, and human activities related to the sea. Recognizing that tides differ from phenomena like currents, which are primarily driven by wind and density differences in water, seiches, which are standing waves in an enclosed body of water, and tsunamis, which are caused by underwater disturbances, illustrates the specific dynamic nature of tides stemming from the moon's gravitational influence.