ethereal abstract background capturing the tranquil motion of ocean waves in a harmonious blend of blue and green hues

abstract background ocean waves tranquil serene blue green water sea calm peaceful ethereal harmonious gradient digital art wallpaper fluid soothing nature inspired tranquility motion flowing design artistic gentle ripple texture oceanic natural cool colors aqua seascape marine elegance soft undulating zen liquid simplicity modern decorative creative environmental panoramic relaxation purity nautical fantasy backdrop