Introduction to the Chromista: From Microbes to Giants General discussion of the kingdom-level taxon Chromista, including diatoms, kelp, downy mildew, and other organisms that possess chlorophyll and are mostly photosynthetic, but are not plants. Includes links for more information.
Photos of Algae Images of about 20 genera from the El Eden Ecological Reserve, Mexico.
Caribbean Reef Plants Sample pages and images from an identification guide to marine algae and seagrasses.
Parasitic Protozoa Overview of the one-fifth of protozoan species that are parasitic.
AlgaeBase Information on the algae of the world, including terrestrial, marine, and freshwater forms. Search by genus, species, or common name. Includes images and references.
Protistan Phyla Short articles and illustrations of the major groups of protists.
Protist Image Data Pictures and information on selected genera of algae and protozoa.
Freakin Fucus Introduction and technical information regarding seaweeds and phycology.
Seaweed Site Algae-L discussion list, book list, comprehensive information, and photographs.
Protist Information Server Image database archiving more than 34,000 images (511 genera, 1944 species) and 556 movie clips for research and education.
Droplet Microscopy of the protozoa by Piotr Rotkiewicz - includes images, systematics, glossary, forum, and resources.