Protist Images: Heterokonta
- Classification of these flagellates with a number of images of individual species. English and Japanese.
- http://protist.i.hosei.ac.jp/PDB/Images/Protista/HeterokontaE.html

Protozoa
- Article from Wikipedia on the unicellular microbes that are traditionally classified as protozoans, based on their methods of locomotion.
- http://en.wikipedia.org/wiki/Protozoa

Marine Collection
- Small photograph gallery of microscopic algae, phytoplankton and diatoms.
- http://www.microscopy-uk.org.uk/micropolitan/marine/algae/index.html

Marine Protozoa
- Article by Jean-Marie Cavanihac on these organisms with photographs of many species.
- http://www.microscopy-uk.org.uk/mag/artmar01/protoz.html

Flagellated Protozoa
- Article by Wim van Egmond introducing these organisms with photographs of Euglena, Peranema, Dinoflagellates and Spongomonas, and instructions on growing your own cultures.
- http://www.microscopy-uk.org.uk/mag/wimsmall/flagdr.html

Marine Algae of Northern California
- About 16 photographs of species found in this region.
- http://www.sonoma.edu/users/c/cannon/MarineAlgae.html

Introduction to the Sagenista
- Information on the bicoecids and slime nets which form a basal group of chromists, the classification of which is unclear.
- http://www.ucmp.berkeley.edu/chromista/sagenista.html

Freshwater Diatoms and Algae
- Microscope images of many genera, mostly collected in central Texas.
- http://centexnaturalist.com/foldermainmenus/aamenuf.html

Freshwater Algae
- Provides information on the varieties of algae and their classification with photomicrographs of example species of the main freshwater phyla.
- http://www.micrographia.com/specbiol/alg/alghome/alggen01.htm

Algae from Bemersyde 2006
- Biologists have been studying a loch on the Scottish Borders over time and provide a list of the algae and other protists found in it, with photographs of each.
- http://www.lifesciences.napier.ac.uk/algalweb/Bemersyde06.htm

AlgaeVision
- Provides a searchable image database for UK freshwater and terrestrial algae.
- http://www.nhm.ac.uk/research-curation/projects/algaevision/

Acritarchs and Chitinozoa
- Information on these organisms which have not yet been able to be classified, including their fossil record, biology and life cycle with a number of images of individual species.
- http://www.ucl.ac.uk/GeolSci/micropal/acritarch.html

Protist
- Information from Wikipedia on this group of organisms which cannot be classified as plants, animals or fungi.
- http://en.wikipedia.org/wiki/Protist

Flagellate
- Information from Wikipedia on these unicellular organisms with one or more whip-like organelles called flagella. Although sharing this common structure, they are not a single taxonomic group.
- http://en.wikipedia.org/wiki/Flagellate

Algae
- A basic guide to algae including marine, freshwater and land species.
- http://www.seaweed.ie/algae/default.lasso

UTEX: The Culture Collection of Algae
- This collection includes approximately 3,000 different species of living algae, representing most major algal taxa, many of which can be supplied in large volumes.
- http://www.utex.org/

Seaweed Site
- Information on many aspects of seaweeds with links to other sites connected with these algae.
- http://www.seaweed.ie/

Algae Description and Types
- Algae are plant-like organisms that are usually photosynthetic and aquatic and this article describes the main phylogenetic groups.
- http://www.lenntech.com/eutrophication-water-bodies/algae.htm

Just what is this Stuff we call Algae?
- Information on the freshwater algae likely to be found in a garden pond.
- http://www.fbas.co.uk/Algae.html

Droplet
- Microscopy of the protozoa by Piotr Rotkiewicz - includes images, systematics, glossary, forum, and resources.
- http://www.pirx.com/droplet/

Protist Information Server
- Image database archiving more than 34,000 images (511 genera, 1944 species) and 556 movie clips for research and education.
- http://protist.i.hosei.ac.jp/Protist_menuE.html

Freakin Fucus
- Introduction and technical information regarding seaweeds and phycology.
- http://www.freakinfucus.co.uk/

Protist Image Data
- Pictures and information on selected genera of algae and protozoa.
- http://megasun.bch.umontreal.ca/protists/protists.html

Protistan Phyla
- Short articles and illustrations of the major groups of protists.
- http://www.ucmp.berkeley.edu/help/index/protista.html

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.
- http://www.algaebase.org/

Parasitic Protozoa
- About 10,000 species of Protozoa are parasitic and this article provides information on these species and the illnesses they cause.
- http://www.aber.ac.uk/parasitology/Edu/ParProto/ProtoTxt.html

Caribbean Reef Plants
- Sample pages and images from an identification guide to marine algae and seagrasses.
- http://users.erols.com/offshoregraphics/reefplants.htm

Photos of Algae
- Images of about 20 genera from the El Eden Ecological Reserve, Mexico.
- http://maya.ucr.edu/pril/el_eden/biodiversity/protista/algas/_list_algae.html

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.
- http://www.ucmp.berkeley.edu/chromista/chromista.html

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.
- http://ucjeps.herb.berkeley.edu/rlmoe/

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.
- http://www.perspective.com/nature/protoctista-index.html

Kingdom Protoctista
- Introductory look at the Kingdom.
- http://www.bio.umass.edu/biology/conn.river/protoc.html