Following on from my earlier posts about sand patterns on the beach, you might be interested to have a look at Gary Greenberg’s website sandgrains.com. Amazing photographs of sand grains under the microscope!
He has published a book A Grain of Sand – Nature’s Secret World (The Amazing Microphotography of Dr. Gary Greenberg) – there is a short video about the book on the site and also on You Tube.
Jessica's Nature Blog 