See also:

• Science: Biology: Botany: Phycology  (8)
• Science: Biology: Genetics: Eukaryotic: Protists  (3)
• Science: Biology: Microbiology: Protistology  (17)
• Science: Earth Sciences: Paleontology: Micropaleontology  (15)

This category in other languages:
	German  (6)

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..

Caribbean Reef Plants - Sample pages and images from an identification guide to marine algae and seagrasses..

The Center for Phycological Documentation - Information about algae and their taxonomy, including 'The Catalogue of the Benthic Marine Algae of the Indian Ocean,' and 'The Index Nominum Algarum,' a compendium of circa 200,000 algal names..

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

Freakin Fucus - Introduction and technical information regarding seaweeds and phycology..

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..

Kingdom Protoctista - Introductory look at the Kingdom..

Natural Perspective: The Protoctist Kingdom (Protoctista) - Describes the kingdom as "a catch-all for the multicellular organisms which don't fit into the Animal, Plant, or Fungus Kingdoms" and describes its scope..

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

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

Protist Image Data - Pictures and information on selected genera of algae and protozoa..

Protist Information Server - Image database archiving more than 34,000 images (511 genera, 1944 species) and 556 movie clips for research and education..

Protistan Phyla - Short articles and illustrations of the major groups of protists..

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