Lichen on a tree. Did you know there were so many different lichen? Parmelia sulcata (upper frame, blueish-green) Rinodina roboris (centre, blue) ~ By Vaughan Fleming
Carol Nelson, Anasazi
Blue Biggs Jasper stone
Emma Moxey. Print. emmamoxey.co.uk
Dew Drop Macro Photographs by Sharon Johnstone
Scanning electron micrograph (SEM) of cancellous (spongy) bone of the human shin.