Look at Life in a drop of water. http://ebiomedia.com/gall/drop/dropmain.html
Micrographia -- Very cool pictures and information. http://www.micrographia.com/index.htm
Virtual Pond Dip http://www.microscopy-uk.org.uk/index.html?http://www.microscopy-uk.org.uk/ponddip/index.html
Amoeba Poem http://www.middleschoolscience.com/amoeba.htm
Smallest Page on the Web http://www.microscopy-uk.org.uk/mag/indexmag.html?http://www.microscopy-uk.org.uk/mag/wimsmall/smal1.html
Study Stack Protists http://www.studystack.com/menu-25514
Explore Microbes http://www.microbe.org/
Bacteria WebQuest Site http://www.teacherweb.com/CA/PalosVerdesHighSchool/WantedPoster/index.html