Or that sound travels across water? I assume it’s because usually there are blockages, tree/buildings horizontally, while in high-rises and boats there are nothing blocking sounds
Edit. The myth here is that sound travels across water and upwards more than any other direction. Apologies if it was not worded well
Sound travels as a wave in the form of a sphere from where it was created through a medium. It can travel through most mediums with varying degrees of difficulty. Water being one of the best mediums through which sound can travel. It cannot, however, travel in a vacuum. That’s why “in space, no one can hear you scream.”