Biological indicators have been developed and applied at field sites in the eastern U.S. to assess the effects that environmental stressors such as contaminants have on the health of aquatic organisms. (Environmental Sciences Division at Oak Ridge National Laboratory.)

A review of the literature on the use of enzyme induction in aquatic organisms to measure environmental pollution.

Featuring the habitats, animals, and plants of Canada's oceans, rivers, lakes, and wetlands. University of Guelph.

Part of the Fresh Water web site.

A technical article by Tim B. Graham about climate change and ephemeral pool ecosystems, with photographs.

A research group in Finland; studies on zooplankton, cyanobacteria, fish and blue mussels in the Baltic Sea -- staff, projects, publications.

A scientist tries living underwater in an Australian lake, using a self-sustaining habitat. Includes video feed, photograph gallery and latest news.