50 Species of Diatoms
Posted on January 7, 2008 Comments (3)
Photo of diatoms by Randolph Femmer (sadly the government deleted the site, breaking the link, so I removed it).
A photomicrograph depicting the siliceous frustules of fifty species of diatoms arranged within a circular shape. The image has been inverted to white on black to bring out details. Diatoms form the base of many marine and aquatic foodchains and upon death, their glassy frustules form sediments known as diatomaceous earth.