Who knew a dipperful of seawater contained so much life? Well, photographer David Liittschwager, that's who, because in 2006 he captured this eye-opening photograph for National Geographic.
Next time you're at the beach, forget about the sunset or the crashing waves or the light that's reflecting off of the water just so; if you want an amazing photo opportunity, all you have to do is look down at the stuff between your toes.
We're talking, of course, about sand. And if you're thinking that sand isn't exactly photogenic we have a feeling your opinions will change once you feast your eyes on what Dr. Gary Greenberg saw when he put sand grains under the microscope.