The Answer is The Tide
There are a few things that cause the ocean surface not to be level. The small-scale variation or waves is caused by wind. The ocean level in various areas is also affected by wind patterns, ocean currents, variations in Earth's gravity, and the tides.
The height of the surface of the ocean is referred to as sea level.
When the surface level of the ocean and bay of gulfs, inlets, and estuaries are caused by gravitational attraction of the moon the sun.
Surface current
A Tsunami, or tidal wave, or seismic sea wave may be caused by an earthquake. It is incorrect to refer to giant ocean waves caused by severe storms as tsunamis. Severe storms may cause giant ocean waves referred to as "Rogue Waves" - which are distinct from and NOT the same as Tsunamis.
A Tsunami, or tidal wave, or seismic sea wave may be caused by an earthquake. It is incorrect to refer to giant ocean waves caused by severe storms as tsunamis. Severe storms may cause giant ocean waves referred to as "Rogue Waves" - which are distinct from and NOT the same as Tsunamis.
A giant wave usually caused by an earthquake beneath the ocean floor
the ocean surface and wind
Surface ocean currents are caused by winds. As wind blows across the surface, the wind pulls the water and causes waves.
Sea Level
The term "sea level" refers to the height of an ocean's surface.
the ocean surface and wind