I've got a number of different pics, but I'll try to start with only a few.
I'm learning more about what I'm seeing every time I look into the microscope. I'll also attach some of the links that may help.
Algae Image Database
PalDat pollen images (free registration required)
Pollen Identification Database (talk about the many forms of pollen!
Cedar Eden Enviromental (pics of algae, bacteria, zooplankton and many others)
Observations of Algae and Their Floc in Water
Bucman Labs;photomicrographics (check out the nematodes
Various Bacteria found in water samples