The sounds of breaking waves crashing on rocks has got to be one of the most relaxing and satisfying sounds. I can sit there for hours enjoying the sounds especially on sunny days while I soak up the sun. It doesn't get any better than being at the intertidal zone on rocky shores during low tide. That way you get the full roar of the crashing waves with the occasional splashes. While at the intertidal zone you can also spot marine creatures such as intertidal fishes, sea anemones, limpets, crabs and shrimps in rock pools and crevices.