Forum

•  DIATOM-L (a forum for discussion regarding DIATOMS)

•  ALGAE-L (Visit Mike Guiry's algal page for details)

•  Microscopes http://groups.yahoo.com/group/Microscope/

•  Plankton http://groups.yahoo.com/group/planktonnet/

Societies

•  International Society for Diatom Research  

•  International Phycological Society  

•  The Freshwater Biological Association  

•  The Japanese Society of Diatomology

•  Phycological Society of America

•  North American Benthological Society

•  Phycological Society of Southern Africa

•  British Phycological Society

•  Internation Association of Limnogeology

•  American Society of Limnology and Oceanography

•  Hungarian Algological Society

•  International "Fossil Algae" Association

•  Field Studies Council

•  Japanese Society of Phycology

•  American Association of Stratigraphic Palynologists

•  The Micropalaeontological Society