Introductory look at the Kingdom.

Images of about 20 genera from the El Eden Ecological Reserve, Mexico.

Large image gallery of freshwater algae from the Keweenaw Peninsula, Michigan.

Overview of the one-fifth of protozoan species that are parasitic.

Microscopy of the protozoa by Piotr Rotkiewicz - includes images, systematics, glossary, forum, and resources.

Pictures and information on selected genera of algae and protozoa.

Sample pages and images from an identification guide to marine algae and seagrasses.

Algae-L discussion list, book list, comprehensive information, and photographs.

Information on the algae of the world, including terrestrial, marine, and freshwater forms. Search by genus, species, or common name. Includes images and references.