Sometimes when you look at a grain of sand in your hand, you forget that there couldn't be a beach without every one of them.

It’s the late afternoon and the sun is going down.  The temperature of a hot day is beginning to cool. The beach of crisp, clean golden sand stretches for a kilometer or more and is crowded with holidaymakers. As far as the eye can see on one side, there is the headland, on top of which sits a lighthouse. On the other side, the beach runs into a small, secluded  cave and craggy rocks where holidaymakers look to catch crabs and shrimps. On the beach, the latecomers are arriving from the car park behind with their children buggies, ice-cooler boxes and other necessities for the beach experience.