Advancing the Science of Limnology and Oceanography ( http://www.aslo.org/photopost/showgallery.php/cat/518 )
Central Michigan University “Zooplankton of the Great Lakes” ( www.cst.cmich.edu/users/mcnau1as/zooplankton%20web/index.html )
Micrographia ( www.micrographia.com )
National Oceanic and Atmospheric Administration Great Lakes Environmental Research Laboratory ( http://www.glerl.noaa.gov/pubs/photogallery/Waterlife/index.html )
United States Environmental Protection Agency Great Lakes National Program Office ( www.epa.gov/glnpo/atlas/index.html )
United States Geological Survey Nonindigenous Aquatic Species Database ( http:// nas.er.usgs.gov / )
All pictures and drawings not cited during the presentation were provided by Inland Seas Education Association. These pictures can be used freely for educational purposes if ISEA is correctly attributed. All commercial use of these pictures is prohibited.