Life in a Massachusetts Tide Pool - Articles, photographs and activities involving a variety of marine organisms.

Marine Biology with Ms. M. - Information on taxonomy of sharks.

Meiofauna: the Microscopic World - Meiofauna are tiny organisms (such as protozoa) -- almost all of the living things you can see with a basic microscope (at least 40X magnification) but not with the naked eye. Site discusses their potential uses in biology education and research on evolution and ecology.

Ron's Pond Scum - Photographs and descriptions of freshwater microorganisms.

Marine Life Library - A searchable compilation of underwater photography featuring marine lifeforms and creatures.

Center for Aquatic and Invasive Plants - Information, including databases, on aquatic and wetlands plants, including invasive plants and their control. Many internet links to related resources. From University of Florida.

FreshwaterLife - Information about freshwater animals and plants.

Marine Flatworms of the World - Devoted to the study of polyclad flatworms (Phylum Platyhelminthes, Class Turbellaria, Order Polycladida), a group of large, free-living marine Platyhelminthes which are mainly found in tropical coral reefs.

Aquatic and Wetland Plants - A forum for the discussion of current ideas and problems relating to the ecology, conservation, identification and taxonomy of wetland plants.

Aquatic Animals - Articles, links and discussions.

Zoobenthos of Lakes - An extensive and information-packed website about organisms dwelling in or on the sediment in lakes, by S.M. Mandaville of the Soil & Water Conservation Society of Metro Halifax.

SDSU Fish Ecology Lab - Fish Ecology Laboratory at San Diego State University (USA). Includes research topics, current graduate students and projects the lab is currently involved in that impact San Diego and the nearshore, coastal environment.

Marine Biology - Site with descriptions and pictures of over 60 of the intertidal organisms in the Pacific Northwest.