It may not always be windy on the sea. Don’t forget the saying we learned: calm seas. There are few times when there are no winds and waves on the sea, but this situation does not necessarily exist.
The generation of wind requires a pressure difference. Simply put, there are two places, A and B.
The temperature in A is high, so the gas expands, resulting in low pressure. The temperature in B is low, so high pressure is generated. , thus creating a pressure difference between the two places, thus forming a flow of air, which is wind.
If the above conditions are not met, there may be no wind.
But we are talking about the sea. In fact, the temperature difference between the sea and the land is very large, so the wind will not stop in a large range, but if we only look at a small area , then there might be no wind, that's it.
Ocean fluctuations are one of the important forms of seawater movement. Waves are present everywhere, from the surface to the interior of the ocean.
Wave is the wave phenomenon of sea water. The sayings "no wind makes no waves" and "no wind means three feet of waves" are both correct. In fact, waves will appear on the sea whether there is wind or not. Generally speaking, waves refer to waves generated by wind in the ocean. Includes wind waves, swells and nearshore waves. Swells and nearshore waves can also occur on calm seas. This is probably evidence of what people call "calm three-foot waves," but in fact they are propagated by waves caused by winds elsewhere. Waves in a broad sense also include tsunamis, storm surges and internal ocean waves formed under the action of external and internal forces such as celestial gravity, submarine earthquakes, volcanic eruptions, collapses and landslides, atmospheric pressure changes and uneven seawater density distribution. They will all cause huge fluctuations in the sea water, which is the true meaning of waves on the sea even if there is no wind