Read about the basic physiology of the organisms that cause giardia and African sleeping sickness. Describes flagellates and amoebas.

Bowling Green State University offers this large collection of diatom images using electron and light microscopic techniques. See links.

Read about this complex single-celled organism named for the fine, hairlike structures that cover its exterior. See illustrations and photos.

Known for producing bioluminescence, deadly red tides, and some forms of seafood poisoning. See photos and read about complex symbioses.

Learn about protists that thrive in acidic conditions, high or low temperatures, or under high pressure. Presents literature citations.

Find out about the symbiotic relationship between this shell-covered organism and algae. Refer to photos, classification, and physiology notes.

View electron microscopic images of this single-celled organism and learn about its identifying characteristics. Covers evolutionary changes.

Basic definition provides classification info and a description of the molecular structure of this group of one-celled Protista.

Learn about this group of one-celled organisms characterized by the hairlike structures, or cilia, which aid it in locomotion.

Encyclopedia entry describes this one-celled type of algae, and provides links to related Web sites.

Learn about this simple life form common to the oceans and contains characteristics both plants and animals.

Article on this plant includes details on particular species, and their appearance and habitat. Find related resource links.

Virtual encyclopedia describes the major characteristics of these one-celled organisms that have hairlike cilia and reproduce asexually.

Reference article provides details on the kingdom of one-celled organisms which exhibit both plant and animal characteristics.

Describes the different members of this group of single-celled organisms and their mobility mechanisms.

Read an encyclopedia article about the protozoa and find links to related topics.

Browse this list of protozoa found in the Skagerrak-Kattegat region. View the QuickTime movie and individual species descriptions.

Find a collection of photos, seasonal study results, and species lists. Contains restoration project details.

View the glass-like skeletons of these ancient symmetrical organisms. See photos and related links.

Learn about how algae live, where to find them, and how they are economically important. Read research reports and view detailed photos.