Stream Frustulia is one of 16,000 species of diatoms, one of the many groups of organisms that make up the algae.
Diatoms are photosynthetic, but have rigid cell walls reinforced with silicon rather than cellulose.
They can be found in all aquatic environments and, although they're unicellular, often live in large colonies. All Rights Reserved . No images, graphics, software, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders.