Oh my I need this it looks like the ocean. How awesome would that be in a garden. Succulent border - Massed Echeveria elegans with pots of what looks like Echeveria ' Perle von Nurnberg' Maybe use dark mondo grass for the contrasting plants?
PVC Pipe Planter Disney world does this! Lowes sells the 4 to round PVC pipe with holes already drilled. Purchase an end cap, fill with rock, soil, and plant. I will often put these in the center of a very large pot to stabilize, and add amazing heigh