The sea, connected as the world's ocean or simply the ocean, is the body of salt water that covers approximately 71 percent of the Earth's surface. The word sea is also used to refer to second-class sections of the sea, such as the Mediterranean Sea, as well as some large and completely landlocked saltwater lakes, such as the Caspian Sea. The sounds of the calm sea convey the tone of the water element and, when listening, synchronize with the vital rhythms of man. Complete relaxation helps you to have a healthy sleep, as well as improve the general physical and emotional state of a person. Relaxing sounds, in particular the sound of the sea and the sounds of waves, have a positive effect on sleep rhythms, as well as normalize the alternation of sleep and wakefulness in the daytime mode. The wonderful view of the calm sea and splashing waves allows you to use this video as background.