You turn the spigot or pull the handle and it douses you, fresh water running down your face and over your whole body. It’s a cleansing, a cooling, and a renewal. Beach showers are about the best feeling short of getting spit out of a draining barrel.
If going into the ocean is already something of a renewal for you—a physical act that rejuvenates your soul—then the shower afterwards is a spiritual B12 shot.