Compared to the sculpted, fractured, and life-laden rocks of the intertidal at FMR, the sand you walk on to get to them may seem pretty boring. Maybe the KQED Quest blog entry Sand: Hold a Mountain in Your Hand will change your perspective.
And Playing in the Sands is a site based on an educational poster (available for purchase on the site) that shows you close-up photos of sand from different locations around the world. Click on the small images in the lower pane to see them magnified in the upper pane. There is an amazing variety and some are quite beautiful.